Hello Josh, I'm Ruby from your Creative Partnerships.Your thumbnails are looking good! I like the way your using different perspectives within them, which makes it easy for me too see where you'd want the camera to be. Might be worth trying out the same thumbnail but in a different perspective maybe? :).
Just wanted to add that the quality and your use of perspective has encouraged me to stop being so safe with my drawings :) Also I like 44, again it gives you the chance to play with different light sources, what weather or time of day is it outside the window to give it a specific light?