1. When you are getting ready to trim your seam allowances, put a recipe card on the line & then fold back the foundation. This will give you a nice crisp line to lay your ruler on to.
2. Use the flat flower head pins to pin your fabrics together as it will lay nice & flat & not distort your block.
3. I prefer to give each section a good press w/my craft iron before trimming. While some people can finger press & not have any problems, I found that I was ending up with a little "poofiness" there if I didn't use my iron.
4. If you prefer not to use flower head pins, you can also put a dab from a glue stick on to your fabric to temporarily hold it in place.