It looks good. Study some of Leah Days videos and you will see she has thread buildup. She uses isocord thread so she can back track several times in some designs. The only way to get perfect stitching is with a long arm run by a computer. The more you FMQ the better you will get but I wouldn't take out your stitching. I find a little less then perfect stitching is better then the holes left from removing it. Sometimes washing the quilt will close in the holes but sometimes not.