Just be concerned with what the front of the quilt looks like. You want seams to match, points to be pointed etc. and reduce as much bulk as possible. To accomplish this seams go in different directions and are sometimes even open. There is a technique when assembling a 4 patch of pressing the seams all in the same direction around the 4 patch and the seam intersection in the middle opens up and forms its own little square. This reduces bulk at the intersection. The bottom line is how the front looks and not the back.
Your patchwork is looking great!