If you like the look of a pantograph on your quilt, then be proud of the fact that you have done it yourself. The fabric masterpieces you create, whether they are for you or for gifts or for charities, will be just as warm and thoughtful. Besides, what is the difference in creating a pantograph design on a quilt and "merely" stitching parallel lines diagonally all across the face of the quilt? They are both "designs," right?
I have a favorite long-arm quilter who has never ceased to amaze me when she has put a pantograph on one of my quilts. Here choice of designs has always made my finished quilts even more amazing to me.
Please be proud of yourself and enjoy the process you are doing. Never let anyone else tear down the wonderful work you are doing.