I've noticed some stark differences between my style of captions and other offerings, and I wanted to elaborate on those differences. Incest being my thing, I'll focus mostly on that theme. In order to do so, I'll start with the first step, choosing the image:

When I'm looking for an image, I'm drawn to pictures that leave an open space around the body we're focusing on; for instance, in the above image she's by her wall, and a plain white wall on the upper left or right corner is a great location to include the caption. One of the first things I look for concerns details that will lead the theme. For example, knowing that our bodies inevitably show signs of aging, this means that the female depicted in an attractive image will lead the theme. I notice a lot of captions that suppose it's a mother/son theme wherein the female depicted is clearly the same age, if not younger, and shows no signs whatsoever of ever having birthed a child, this can pull the audience out of the fantasy. In the above picture, we can clearly see a younger female, there's evidence of that in her face, and further evidence of youth in the smooth, flawless nature of her skin. So, this can't be a mother, that wouldn't make any sense unless I'd like you to believe an absurd tale where she had her son while still a child herself. So, we can easily work on the assumption that she's anywhere from a teen to a young adult, high school to college aged. This narrows our theme down to a daughter, niece, cousin, or sister. I'll go with my favorite theme, a sister.

Now that I have chosen an image, and that image has led my theme, it's time to figure out what the story is here, knowing the end caption will be positively incestuous. That's an important thing to me. As a gentleman and a caring brother to three sisters, I cannot fathom treating women in a manner that's often depicted in some Imagefap captions - so, two of my personal rules will always be a) the importance of consent and b) non-aggressive or abusive behavior and language. I've often joked that I'm a few irrationalities away from worshipping the female body in place of an existing god, an Aphrodite in the flesh, and, therefore, cannot fathom rapacious or abusive treatment towards a living example of beauty. With those rules established, I can now peer into the depth implied by the image, reinterpreting it in an incestuous light. It helps to ask myself certain questions, namely:

What's happening? 
Where are they?
What is the position the individual is in?
Are they interacting with an object?
What is their facial expression?

There's always a story to any image, and our goal is to tell a short story in one of the shortest forms possible: captions. I prefer the story to be applicable to our own lives, to illicit fond memories and set the stage for the audience to further the story how they see fit. So, let's figure out what the story is with the above image...

Knowing now that we're going to caption the image as a taboo moment between a brother and sister, it's time to figure out how they ended up where they are now, using details that may imply what led them there just moments prior to taking the picture. The first obvious detail is her smile, so, she's clearly consented to the moment, so much so that she's outright having fun and she trusts the other individual: you - the audience playing the role of her brother. In fact, she's showing off for him, she likes him standing there, enamored by her nude form. There's something pink on the bed, but we can't entirely tell what it is so we can get creative and assume it's something that helps lead the story. I'm going to pretend like it's an article of clothing, which would lead to the implied detail of her having recently stripped, a simple sentence or fragment that can be initially included in the caption. She's wearing sexy underwear, so it's safe to assume this was more or less planned and not a random moment. Realistically, the average female plans to wear sexy underwear, but not as an every day article of clothing, and I like to work with social averages because it widens the range of the audience that can find the caption relatable or believable.

Likewise, realistically, we know the moment isn't going to end with the brother just standing there gawking at her form, right? She's sexy, she's flirtatious, and she's showing her body off for him, for you, her brother. Her position and the details surrounding it can imply a want of foreplay, so we can include a line pertaining to that in the caption, too. Unless it's a "quickie", the best coupling doesn't skip straight to sexual intercourse, but leads up to it, or we risk spoiling the moment for an orgasm without considering our partner as a sexual being with needs of their own; granted, again, that speaks to the social average and in no way judges those who enjoy the opposite, to be used, like a sexual slave. 

Now that we've discerned most, if not all, of the obvious details and their implications, and we've established a direction for our caption to start off with, we can get creative. We've left the observable details behind and can now imagine how our story progresses further. Keeping in mind, the size of the image inevitably limits the space available to write the caption, so we'll need to figure out how to tell an enticing, relatable, incestuous story in the least amount of words possible. There's a very wide range of internet and mobile app options for captioning, even MS Paint if you want to travel back in time to the '90's, so the program or resource we choose to use can alter many of the restrictions listed above. It's a personal preference of mine not to include a separate text box, so it presents a challenge to tell the hottest incestuous story in the space available. Ultimately, everything about this process is subjective, an aesthetic personal preference, limited only by our resources, time available, and capacity toward imagination. How would you caption this image? Feel free to write it below.