let’s say you want to blend together two scenes. gif those two scenes and open them up in photoshop. now copy scene one and paste it over the END of scene two. (like the last 4 frames of it) now go to those four frames and play around with the opacity so it either goes from 0-100 or 100-0. the concept of overlaying gifs into a sequence is kind of like squishing them together so they overlap!