Great job. You obviously know what you are doing. Only thing I can suggest is go forth and try more stuff. Different borders, different shapes in the back or foreground, more storytelling. Your final one, the man with flaming hands, who is he? Is he good, bad, is is night, is he standing on a small island in a mirror lake? This is beyond the scope of the assignment, but it is fun.

It's at https://proko.com/timer. You might have to scroll down a bit if you've purchased other pose packs. Here's what it looks like: