I use Quilter's Betweens needles, usually one of the higher numbers9-11, because they are shorter and allow me to rock and get smaller stitches. The stiffness, thickness of the sandwhich will determine also, how close your stitches will be, how small they will be. Also, do loosen the tautness of your quilt in the frame. Get it smoothe and then loosen it a bit. That will allow you to rock your needle to get smaller even stitches. Just remember, that it takes practice to get nice even stitches. No one did it perfect the first time! And most of us don't do it perfect after many years. We get better at being even and consistent, which is what I strive for. There are some fabrics that are very difficult to "needle" and if I get two stitches on my needle, I am happy! :lol: