Colored sketch of a doll

This sketch is based off a photograph of a hand made doll. She had a lot of beautiful coloring and materials and I loved the delicacy of her posing as well as the twist of the torso. I tried to capture as much as I could of the eclectic textures and colors while at the same time not loosing the feel of the paper and the colored pencils on it. I do know that I need to get back to doing more original pieces not based off other people's photograph and art, but I also feel that I haven't been doing enough general art on a consistent basis to feel comfortable doing that. Maybe I'm just scared (common enough in artist) and am using that as a crutch. But I do feel that skill wise I am getting better and I should try to incorporate a bit more my own "visions" into my art and not just repeat and repeat and repeat. When should the dancer stop basing her moves solely on choreographed work and start moving to the music on instinct?