I was like that when I started a couple of decades ago. My advice is, don't be a perfectionist!!! It is rare for someone to produce a prize-winning quilt the first time. The secret is to actually finish quilts -- *lots* of them. I have learned something from every quilt I've made; the more you finish, the faster you will learn. I wasn't happy with the look of some of the quilts I made, but it's amazing that there is always someone who will appreciate that "ugly" quilt.
I still remember the story of a mother whose first quilt turned out to be a "green monster". She continued quilting and years later was turning out wonderfully beautiful quilts. Meanwhile, the "green monster" was the quilt that got tucked around the sick child, was dragged out to make play forts in the living room, etc. When her kids were grown and she asked which of her quilts they wanted, the first choice of all was the "green monster" because there were so many good memories associated with it.
In my own case, one thing I appreciate about dogs is that they don't mind if my color selection was way off.
Check your local library for books. Take a class once in awhile. And, the hardest thing, start cutting fabric and sewing fabric! You learn good things just by doing them. You can always refine skills later on.
My two cents.....