For some reason, I can't seem to follow pattern directions anymore. If it is a square block, I end up drawing the block in EQ7 and then use that as my guideline to make the quilt. I can count squares or HST's that are needed and see the pattern so much clearer.
I agree with the others. If you are doing it only for your use, you can do anything you want. If you want to share it, then that might be copyright enfringement, unless the block is a part of public domain. If it is an original block design, then you more than likely could be prosecuted if you shared or sold the revised pattern. Wish you would post a picture of the design or a link to the class.