Hey Susie. I did quick take on your painting. Can you do simpler color thumbnails like this? Dont worry about details. Just focus more on the composition and the camera but try to push more overlaps and value organizing. Let's loose the purple in your color. It is little distracting. Let's keep it just orange and green and transition color. So spend less time on the texturing and render. Just do 4 to 5 color thumb based on this color. Be little more simple about the shapes.