Here is my Victory Star block, which is comprised of two different units and a solid center square. The units are not very complicated, but when you are first making a block, you do have to concentrate a bit on what you are doing, and particularly the direction you are sewing your "sew and flip" corner blocks.
I am sure most of you have used the sew and flip method, but here is a photo to demonstrate what that is all about:
Draw a diagonal line on the corner square and stitch right on top of it. This is where you have to pay attention, because there are two directions in which you might draw the line and stitch, each giving you a corner square that flips in a different direction. This will make a critical difference depending on the design of your block.
Trim, flip and press and there is your unit. Don't you agree that it is a preferable method to cutting and sewing tiny little triangles onto a larger piece of fabric?