I have a home stretched mid arm machine. I guess it's almost a long arm. It has taken many years to be able to quilt with it, but I do love it. It does take practice, practice and more practice. If you do have a set up - I would say load some practice fabric on and go to town, Yes, you will have trouble with many things - but breathe deep and take a break, then quilt some more.
If you already have that set up, just use it. It will be worth it once you get past the trouble.