Practice, Practice, Practice! :D
Are you planning to FMQ the design or make a pattern/template? Whatever you decide, make a couple of quilt sandwiches and transfer your pattern to them, then do some experimenting with quilting it. You may find that you'll have to adjust your pattern a bit, you may find that it's super easy and you don't need a pattern at all....
A couple of other things I do when FMQ: relax, listen to music, stop "thinking" and just start "doing"!
Good Luck and Have Fun!
rf