Carpentry

Over the fireplace, on a 19 foot wall, less the fireplace, I have 2 long pieces of finger molding going up the wall approx. 3 feet apart, with crown molding capping it off. After looking at it, it looks to plain and I would like the molding took off and put on a little wider board to make the finger molding to stand out and maybe a larger piece of crown molding on the top to finish it off. It isn't a very big project, and my husband and I will paint the boards, this project is painted white. I would like to have it finished asap.