i would like to improve this drawing.

[solid sparrow]

i have the feeling something is off and i would like to fix it, it anybody could help me it would make me very happy <33
i added the drawing and the refrence photo

[frank cedar]

The main things I notice are that some borders are wonkier than they should be, and a lack of texture, specially on the neck part. Also a better blending in the shiny parts, like the shine in the center of the neck or in whatever is on the side of his face, would probably make it feel less artificial

But overall awsome drawing dude