Another way to see how the quilt will look is to arrange you 4 blocks on the table. At on corner stand 2 mirrors at right angles to one another. Bob down so you can look straight into place where the mirrors meet and your brain will see a whole quilt. I use 2 square hand bag mirrors kept in the sewing room and is so quick and easy to do. I was shown this trick years ago when I was in the same position as you, new to patchwork and wandering whether to carry on with my blocks or use the material in another pattern. It gives you a good idea of what each placement would look like.