Oh! It sounds like your Grandmother is giving you a lot of input for what she likes. If she likes the blocks on point, or likes the coral color, I'd go with her suggestions. When you set blocks on point, you are simply sewing the rows of the top diagonally with a triangle on the ends of the rows. If you can sew squares together in rows, that's basically what you are doing on point too. Maybe you could practice with some other fabric-- probably you will find out it's not that difficult.