I have NO turnout. Used to get made fun of in school. For me, most of it is in the hips. How I had my babies, I'll never understand. Anyway. I've been skating about 15 years - and the more I do it and work on Moves in the Field, and other required things, such as the spiral sequence in Intermediat Movees in the Field, it has helped. I may never get an Ina Bauer, or spread eagle, but two really good exercises are:
1) the Frog. Place your body face down on the floor (preferably carpet), and spread legs open. Keep pelvis on floor as much as possible. It's okay to pull chest up some, just keep lower body pressed down. Then while trying to keep legs pressed down, yet open, try to touch heels together. Hold for 5-10 seconds each. Or as long as comfortable.
2) Sit up on floor with heels together, and hips open. Gently try to press your hips down to stretch those hip flexor muscles.