Help with how to go forward with this piece?

Help with how to go forward with this piece?

Always been kind of a lurker here, and always told myself that I should post eventually... so hello. :^)

I've been working on this piece on/off since August 2016 due to work, PS crashing leading to losing some progress, and getting stuck on what to do next. I recently came back to it again, but ended up stopping again because I got stuck on how to progress. Any tips/suggestions on how to continue with this piece, what I could possibly add/subtract, or just general ideas you think could help me along? Thanks in advance!~~ (The piece was supposed to be a birthday gift for my boyfriend of his Guild Wars 2 character.)