You are doing a very good job. Yes, add borders. I think I would go red, white (or greyish) then red. These do not have to be the same fabric, merely complement it. Be careful with the red. It is easy to get reds that really clash. You could also add a very thin inner border or a flange of black. (A flange is a folded, pressed, cloth inserted into the seam. You could use a strip that is anywhere from 1" to 2" wide. It is usually pressed towards the body of the quilt.)