Not bad at all for a first try!

Another wash (I assume you mean the bone/skeleton areas) would be in place. These you can either splash wash all over or just try to hit only the cracks/holes/deep areas. Either is fine depending on which look you want.
I would also suggest to line up all edges with a dark wash (brown or black). Like where the metal part of the shield meet the red part. Around bolts. All places where two distinct objects meet.
This will help make the details and the overall look more "readable".
While black can be used for almost anything, brown looks best on gold parts.