ideas for art exam and a gif

im really not used to making a lot of concepts and preparatory stuff for a "final drawing", so i reeeeally want to finish it right now, but i cant. Screw cambridge art. JUST LET ME CASUALLY DRAW STUFF I WANT.
Exam will start on this Wednesday, and im really scared that ill stop liking this idea by then, but lets hope it wont happen :D

aaand heres a gif with steps i was refining this idea

ANY SUGGESTIONS ARE VERY WELCOME

Have a nice day ^^