Yes I have used Marti Michell's templates and they are the best. Her first template I used was the Giant Dahlia. Some friends of mine made the Giant Dahlia but did not use her templates and they had trouble getting the center to lay flat. When I seen her template in the Keepsake Quilting book I mentioned I wanted that and lo and behold my daughter gave it to me for Christmas. I made that quilt and is turned out great. I just recently ordered her template for the I Spy quilt and finished it lst Sat.
So at it and you will be happy you did. I have been making quilts for a long time and they still are nopt perfect, but no body is perfect except God. GooD Luck