Make a few sandwiches and practice practice practice. I've done a bit of FMQ and I still always have a go on a practice sandwich before I 'go live' just to get into the groove. Plus, I find it's necessary to check that tension is OK, the threads nicely balanced top aand bottom, etc. In an ideal world, the practice sandwich would be the same fabric and wadding as the quilt but it doesn't always work out that way! LOL