Your first block is lovely, and much more difficult than the sorts of patterns I started out with. My first quilt top was truly a mess, but the nice ladies at my LQS were so encouraging. They said, 'We're here to have fun, not to be perfect.'
It's hard to make suggestions without specifically knowing what techniques you are using. I like written directions, so when I was starting out, I read a lot of books about the fundamentals of piecing. Since you prefer visual directions, maybe you could google topics like pressing, cutting, and techniques for matching seams, to make sure you are doing those things properly.
The main thing is just to keep on piecing, and you will improve with every project. I highly recommend doing the Bonnie Hunter mystery each winter. She gives great directions, and my piecing has improved greatly from doing those mysteries.