Interior Decorator?

We are looking for someone to help us do a cosmetic facelift on the playroom in our house to change it from "kid" to "teen" - mostly just paint and maybe some new furnishings (rug, light fixtures, plus moving existing big furniture around to maximize the space, etc.), nothing structural. We are terrible at knowing what looks good and would like someone with a good, fresh eye for this! Any recommendations for a person who won't break the bank? Thanks!