"Inside Out" blacked-out image

During the process of creating of image list for the thesis, I faced a problem - the image I am using was modified by me. So there is a question, who should I cite. On the one hand, I have the original image from the article made by 3:4, but in their blacked-out version of the "Inside Out" characters, there is a gap that decides one of them into two (Fig. 1).

Fig. 1

So I decided to use image with original characters and blackout them by myself. So I found a beautiful example of all characters standing in one row and being in their original height ratio (Fig. 2) in the article posted on fxguide, cut out the background and took out all brightness of an image and placed them a little closer to each other (Fig. 3).

Fig. 2

So the final image had no website I would be able to cite. If I would cite the first web page, there would be a difference in the gap. If I would cite the second article, the image would look nothing alike. So, since I am not sure if I could write comments in my image list, I decided to give them here. So if one would be interested in where this image came from, here would be all the links and the description.

Plus, I am not sure what name I should write, since Pixar, basically never made a black-outed image of their characters, and the article on 3:4 website has the author of the text, but who edited the images is unknown,  so I decided I can just write my name there, since I am posting it online, and I adjusted the image, and links to my sources are listed on this page. 

Fig. 3

So here is the solution I came for. Hope it is "legal", and maybe it even might help someone.

Fig. 1: https://fourthreefilm.com/2015/09/looking-from-the-outside-in-gender-representation-in-animation/

Fig. 2: https://www.fxguide.com/fxfeatured/inside-out-rendering/