Try setting you line spacing to equal to or less the than bottom width of your engraging bit. It will probably be less than 100% so you will override the slider bar and type an amount in the box next to it. I start at 10% and work up. You will have to experiment with the depth. To finish i put coats of finish on first than use a cabinet glaze using a small paintbrush, qtips, rags, etc to get the shading where I want. Then apply two more coats of finish. Let it dry really well between each cat of every thing. Good luck and keep experimenting.