We are our own worst critics. I struggle with matching up the seams too. My friend always told me that to cut 1/4" bigger so it gives you room to sew your seam. Also,to line up the the seams with a straight pins with the seams open so they can align better. In the end, all will have many suggestions that work well. While you are frustrated at the misalignment, don't let it take the joy out of your craft. Can't wait to see your final project. The fabric is very pretty!