Foundation Paper Piecing (not the same thing as English Paper Piecing!) is when you sew your fabric directly on to a ‘foundation’ that has a guide printed on it that shows you were to sew.
- Have a light source nearby so you can hold your pattern up to the light to check that your patch is large enough.- Trim your excess seams after sewing on each patch.
If you are happy with that size just print at 100% scale on your computer. If you want to make it twice as big print at 200% or if you want it slightly smaller print at 75% or 80% for example.