I've been a fan of Gwen's for many years and envy her ability to use mathematics as a base for her many beaded beads.
This tutorial isn't a free one, but it's worth the small price as it includes some variations to the basic bead.
On another note, I haven't given up on the Mirror Mirror tutorial. This time it isn't just ripping out what I've beaded, it's erasing two whole rounds of embellishments on the tutorial. Strange how I could draw two rounds without noticing the discrepancy. However on the third round I found that there was a gap between the start bead and the last one.
Well, OK then. That had me scratching my head and thinking the sore shoulders and back from sitting too long at the computer were all in vain, but upon careful inspection I discovered I hadn't done a very good job of rendering a 3-D drawing of the bead. Perspective was a little off, so I'm starting over on the 12 or 16 illustrations. I think the second time around will be easier. . .I hope.