We are always our own worst critics, and it probably does not look as bad as you think it does. Next time try a small zig-zag stitch - if it's good enough for Georgia Bonesteel, it's good enough for us. If I have a quilt with squares I do an "X" stitch across it - no ditch. Think of this as a learning experience - Rome wasn't built in a day, so why do we think we have to be "perfect" the first time out? Unless you will be sleeping with your face next to the quilt, you won't see any imperfections.