My Juki TL98QE has a compensating foot that will also fit on my Baby Lock Jane. I use it to get a consistent seam. I make up a lot of my patterns and don't need a real 1/4" seam. The seams are whatever they are, usually 1/4". If I need the quilt to be a certain size I just add borders. Consistency is the real important part. Being careful to have the pieces next to the immovable part of the foot will keep them right.
Remember we are our worst critics. Up close is the easiest way to see the mistakes.
By the way, Welcome to this wonderful board. There are no dumb questions and most people on this board are willing to help and give advice. Most of us have had the same problems everyone has/had.