Aquarium piece

Finished the illustration 2 assignment we had for class. Though I don't know the specific name, the directions were no narrative storytelling, keep the design simple, no logos/text, and event selected must be easy to identify. All this must be in watercolor, and have no glaze (no layering watercolors); however, value and color roughs we could do in Adobe Photoshop. Can anyone guess what mine was? If not, I've failed (emotionally - not actual grade, because I already got that). What's the valuable lesson I learned this week? Make sure your lighting isn't yellow or else your colors will be distorted. So as you can tell, my color rough and final don't entirely match unfortunately.