whitepine...i've done it both ways. if you stitch just outside the stars..it makes them kind of "puff"..or come forward to the eye...if you stitch just inside, it outlines the design ...i would try a practice piece and see which one looks best to you. there is no right or wrong way, it's different for every quilt...the important thing is not to stress over it...whichever way you do it, it will be great. my first quilt is my favorite, and i can't count the mistakes i made in that poor thing..but i made it and i love it! as you go..you will get an "instinct"..but for now..just enjoy the journey!!!
you can also google image star quilts and look at the quilting on other people's quilts..that might give you an idea of what you like best...good luck!