Be brave and go for it! You may see flaws, but if it is a gift to someone close they will only see the beauty and hard work that went into the quilt.
That's what happened to me with the first quilt that I ever machine quilted. I saw every nitpicking flaw, but my dil just loved it to pieces...literally. But I am really glad that I took the plunge and got my machine quilting feet wet. It has been easier each time thereafter to do the quilting.
Good Luck and I can't wait to see it!