You're probably looking at it waaaaaaaaaaaaay too close. Just sew your blocks together. If they don't match perfectly at the edges, scootch them so the centers match and don't worry about the seam allowances too much. And don't forget, even if a few points get cut off it'll still be beautiful and nobody but you will notice anyway.
You might look around and see if there's a quilt shop in your area that has beginners classes. It can be extremely helpful to have somebody show you in person how to do things. For that matter it never hurts to take classes if you get the opportunity. No matter how long you've been quilting you're likely to learn at least one or two new tips every time you take a class.