I had an idea to make silk charmeuse pillowcases for my female in-laws for Christmas. If I make one for myself I'll be making eight. I thought I could do a simple personalized embroidery along the hem for each person. I could buy a silk pillowcase for $20, or I could make them for about $13. I've done a fair amount of simple embroidery, but never on silk. Is this a great idea, or dreadful? Thoughts? Suggestions?