Love the colours! got a very similar colour pallet I have just been working with <3
ok so I would lower your mountains in the background as it obscures the silhouette of the bridge and ruins the composition a little it will also give a greater feeling of height. I'd also give the bridge a bit more information if you can, its very flat along the top and supporting struts maybe adding a bit more too it could break it up a little. Also the character is meant to be the main focus however is not on the rule of thirds and the sweeping vine only distracts the viewers eye.

did a super quick paintover, sorry the foreground elements still need work imo.

Hope it helps