Room decorating isnt easy, is it?

I don't see the green from the comforter in the curtains. The curtains have a different olive-green. I wouldn't put them together. If you kept the curtains, I would go with dark brown comforter & bright color pillows to pull the colors out of the curtains. If you keep the comforter, you could still do a print on the curtains. Or go with a completely different color curtains (solid turquioise, solid dark brown) and find coordinating pillows.