Look good but why 2 shadows? And maybe go with a warmer background? good luck on your entry

I guess the two shadows are copying the two abstract mushrooms which remind me of pine cones as they are, hence the cold background with snow

Going for symetry instead of realism. I get it. But if you're going to have two shadows, the assumption is two light sources. Which I guess is hard when you're trying to use shadows to give a drawing dimention. I like your use of a "nub" to make the flower.

very nice