advice / question ? [ art showcase blehhh ]

Hello! It honestly looks really good, although I understand shading metal is a bit tricky. Something I find that beginner artists struggle with is going hard on the shadows/highlights which is something you really need to be able to do when it comes to shading metal. 

I do have a few tips when it comes to shading metal from imagination - I've broken it down into a few parts here for you, I hope it helps. It is also up to you on how shiny/reflective the material is. The duller the material, the shorter the value range.

EDIT: I've been trying to upload the pic to no avail so here is the link to it- I used your image as an example