Your more brave then me! I can't say I am a newbie, I have made a few quilts so far. I look for a little more challenge with each quilt I make. Believe me, I have made some boo-boo's. I was discouraged too. I made a post to this group, and everyone was so encouraging. Please don't give up.
Your learning like me with each quilt you make. I would pull the stitches out, you won't see them. I have to pull some of my blocks apart, not once but twice. I make the same mistake on the same block. I am making a log cabin.
I may never learn machine quilting and tried hand quilting several times. I think I am not too shoddy with the top, but, disasterous back. I tie all my quilts.
Good luck to you on whatever you decide, but, please don't give up