wary crown
I was thinking that maybe I can improve this drawing at shading.what do you think?
#need opinions
digital apex
If you're struggling with shading and finding your values, I recommend changing the reference image to black and white- that way you can easily distinguish where the shadows go and the value of the things around it. I can already spot a silly mistake with this method (or maybe it's just the way you wanted to do it, so forgive me if so). But the batman logo in the sky does not share the same lowkey(dark) values with the shading on batman. By making that logo darker than the shading on batman, you make the logo the focal point instead of batman how it is in the original reference. As things are further into space, the more desaturated/ lighter they get- so making it darker makes it pop out at us viewers as out of place. So focus the darker values on batman and the lighter in the background! 
But this looks amazing! good job with the drawing and I hope this helped 