I will say that I think using these forms made the centerpieces a little larger than I originally thought and if you are planning to make a smaller version, then I think you will probably use a little less ribbon and will have to use the styrofoam ball, dowel and foam base as mentioned in the tutorials as I found the pre made forms only in the size. So I cut 6 rolls of ribbon into 3" pieces. Each roll of ribbon was roughly 9 feet of ribbon and I tried to pick a variety of ribbon that complimented each other and had three solids and three prints for the first piece and then switched it up for the subsequent pieces.
I started in little clusters and then kept adding making sure to not keep too many of the same color in one spot and make things even. It is a little time consuming and the larger you make the balls, the more time and more ribbon you will need. Lastly, I hot glued some of the same shapes from the lollipop boxes to the pots so it would continue with the nautical theme.
They came out a lot better than I expected and they were a hit at the party!!!!