I believe this is a very nice picture. I'll go ahead and give you the parts I think may need a little improvement so I can write about all of the good things after. xD To start, I think the beak looks a teensy bit pressed in. The crest has some green in it from the background, and the eye could be a little farther back.
Now, the good parts: I like the color scheme! It's supposed to be winter, so cool colors are great! I also love the way you did the feathers. The way you have depicted them allows them to appear light and fluffy. The markings blend in niely, instead of ending abruptly, as mine do. I rated the impact a five because not many people depict such simple yet elegant illustrations and you have done an excellent job with it!
Hello! Going to go ahead and try a little critique here, so here it goes
Vision : I would always give 5 stars in the vision department if it involves a bird! Any drawing with a bird is well envisioned in my opinion! Haha.
Originality : This is not a common species of bird that you see drawn, and I like the color scheme. Very cute and sets it apart.
Technique : Ah, technique... the place most of us have room to improve! I think you're off to a good start here. The first thing I notice, though, is that the feet and beak don't seem very solid. It's important to make them solid to contrast the feathers. I would say try to make them more bold, with darker shadows and lighter highlights, and make sure the edge of them looks sharp, as the branch's edges do. I also feel like the eye stands out too much on the face, looks very obviously drawn on whereas the rest blends more nicely. Perhaps try adding a ring around the eye, like a lot of birds have, and more gradual highlights. For the feathers, I won't give a critique, because I feel you're doing alright there and there are other aspects that would improve the drawing more drastically.
Impact : It looks good to me, but I think with some practice, it could have a lot more impact overall. Good job