Easy. Send it to JPD or VS, have them reblock it on a no.52-type block, cut the brim down to 2 5/8 in., add a black bound edge and a black 1 in. ribbon.
At least, that's what I would do.
Seriously though, this hat has alot of potential. I would suggest that you look around at some of the older posts on this board, and find a style that you would like - then send it to someone and have them work on it.
OR, if you're not into the whole reblocking thing, then try this; wet the brim all the way around with a spritzer and place the hat on a counter or table. Then press the brim flat (I used textbooks to hold mine down, but do as you please). Let it dry, and then you can steam it or wet it into whatever style brim you want.
The crown; pop out the dents from the inside, then wet the crown. Let it dry in the open form and you should be able to put in a nice new bash.