If possible I would recommend entering some of the smaller shows that might be in your area. It's a great confidence builder to see your quilts hanging in these shows and also gives you a really good critical look at your quilt as opposed to others in a show. You will immediately see things that can be done better. Have you attended one of the AQS shows? Very intimidating!!! I remember saying that I would never live long enough to get that good. But some years later I made it into the Paducah show. So, never say never. Precise piecing usually leads to a good square quilt which is important. I've never seen any in the AQS that are not square. Also, pay attention to the binding. Good mitered corners and a fully filled binding seems to be a must. The quilting part...if you're not confident with machine quilting try something by hand. Possibly stitch in the ditch could solve some of the problem depending on the pattern.