Just get comfortable moving the fabric around. Make straight lines, wavy lines, squiggles. Make "z"s. Go forward and backward and side to side. Make circles, squares, and whatever other shapes you want. It's all a learning experience. You are only limited by your experience and your fear. I know. You're sitting and staring at that quilt sandwich thinking "What do I do now?" aren't you. Well, quit thinking and just sew!
You'll do great.