When I first started, I didn't think I could do it. The very first time I was ready to give up, but I really wanted my quilt to be all mine. It did take quite a bit of practice, but I ended up fmq'ing my very first quilt using leaf cutouts made from freezer paper, ironing them to the quilt and stitching around them. I actually find it easier to follow marked patterns, I have a difficult time getting the scale correct when I'm winging it. A wipe board helps me to develope that muscle memory for simple patterns.
This board is definitely the best place to get tips and for problem solving, so many talented people! Best of luck to you, can't wait to see the final product : )