Beautiful quilt top & I can't wait to see the back of the quilt! I don't think I's try to line up tht front with the back because when you start to quilt it you'll have all those seams to go over. If you do make the blocks line up follow Holice's advice that's how I'd do it!! Good luck 7 post pics when it's finished!
Perfect quilt for a 16 yr.old!!