You can "try" almost anything you want. The most important thing to remember is that ALTITUDE is your friend. Get up a bit higher (3 mistakes high) and attempt a maneuver. This should give you plenty of room to recover control if something goes wrong. If you end up diving , reduce power. No sense hurrying into the ground. If you are going to try ANYTHING that really concerns you, get out the buddy cord again. Your instructor will be glad to help. Don't try to group a bunch of new things all at once. Do one, recover, do another, recover, etc.