Need help with this drawing I started!

[hallow frost]

Could someone help me I just started this and before I continue I want to know what I can do to make it look more like the reference? I’m concerned about the lighting mainly any help is appreciated! (I rarely do digital lol)

[drowsy falcon]

Maybe you could try defining the spots a bit more? As for lighting, I don’t know much, but I do see that the reference is darker along the ridge of the back? I’ve never been good with lighting though, so I really don’t know.