Could you show us your reference photo, if you used one? I am sure we could help a lot ...there is a lot of good stuff going on here.
One problem is that there are two compositions here, a harmonious top half, and a lively bottom section which doesn't relate that well to the top half. Also, the composition is divided absolutely in half by that dark diagonal. Now Look at this:
and this, with much more red elsewhere in the pic (rather poorly done, as I did it digitally, not good with those digital brushes! Squint like mad at the screen,it improves it!) Also, the very very dark has been lightened into colour.
course, you may not like either ... but no problem there.
If you spend a bit more than 20 mins, I am sure you will come up with the goods. Perhaps do a thumbnail before you start, next time.