You have some time. How about making a baby size quilt from other fabric as a way to practice this pattern. When matching seams "nest" as much as you can (one seam allowance pressed one way the other pressed the other way.) Nest them and pin perpendicular on both sides. Go slowly over these seams at first. Sometimes with a tricky match I will increase the length of the stitch, check to see how it matched and resew. Most important to remember: No one gets perfect points all the time and if you get frustrated put it down for a while, come back later. Enjoy.