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You have the turnout you are born with. While you can do things to open your hips to reach your maximum turnout there is nothing you can do to make it larger. That is because it is partly based on the debth of your hip bone sockets and as that is bone and you can't change that.

Doing the frog and butterfly stretches can help open your hips. Make sure you always warm up before you do any stretches to both maximize the stretch and avoid injury. Never force any stretch to pain or bounce in a stretch.

Don't force your knees down with your hands as that will only torque your knees and injure them. What is most important is to learn to engage and hold what turnout you have. You must earn to use the muscles deep within your hips and pelvic floor while wrapping your upper thighs outward.

All the while making sure you don't force turnout and that your alignment is spot on. Almost everything you do at the barre if done correctly is meant to help with that. Especially Rond de jambe à tere.

Your teacher will help you with that and will make sure you are working properly and with proper alignment. Barre work should be done at your studio under the watch of your teacher to make sure you are working correctly and your alignment is correct. The frog and butterfly can be done at home.