Miniature and much more precision than I thought was possible

These are at least miniature for me...  I admired a little quilt at guild on Friday.  My friend had joined a group at one of the local quilt shops and was going to make a little quilt every month for a year using Jo Morton fabrics.  I was intrigued because the pieces were so tiny.  I went to the first class yesterday.  These aren't really my usual colors or style, but I wanted to see if I could do it...

The little pinwheels are 1" across and the entire piece is about 11"x12".  The trick there was to make bigger pinwheels, starch and press them, and then trim them down to size.   The pieces would be way to little to actually make the pinwheels the proper size.  The inside square is also 1" in the squares in a square quilt and that one is about 13" x 13".  These were fun, though a bit time consuming, to make.  (I know I could have made a bed sized quilt in almost the same time.)  These are just the tops, I'll probably hand quilt to finish them.  I'm going to do a series and hang them together.