I would say try to capture the flow of the body a bit more. The pose looks a little stiff and if you make the lines more curvy and try to follow general shapes you see, I think it'll look less stiff.
I think it all looks really good! Maybe for the birds add less lines, it might make it feel like it looks "off". Try to be confident with your lines, especially in the birds, and I think it'll make a difference:)
I would suggest making the legs longer. They look very small in proportion. I also recommend practicing drawing simple lines, both straight and curved ones. Once you feel confident in your lines you can use them in your classes and the bodies will looks less stiff. Once you have that down I suggest starting on the basic shapes of the body and those shapes in perspective
