Anyone is feeling unsure about making the quilt blocks I suggest you go to the Boston Block tutorial and practice one block. It is easy if you don't look at the whole project at one time. Just try out one block and see what you think.
I had my DGS who was 10 at the time make a boston block so if he could do it any beginner can do it. It is really easy. There is little math and all you do is sew and cut around the template. By sewing first you get little pieces in the square you cut out.
Don't let the intricate look fool you into thinking it is hard to do. If you take the time to sew a straight seam and cut accurately it will be a breeze. and you will be able to brag about your intricate quilt blocks!!