I also had some fun with some Celtic Knots that were freehand stye a la Patrick Gallagher.
I used Copics and Sharpie pens.
Then, I pulled out some tiles that I had drizzled some rubber cement on. After it dried, I watercolored the sections. After that dried, I rubbed off the rubber cement and tangled.
Footprints, Dyon, Hurry, Diva Dance, Sez, Rain, Flux
Still trying to do different tangles.
Snail, Cubine, Facets, Stricles
As you can see, I was still in the Celtic Knot mode a bit.
If you've never tried this, it makes for a fun string.
And finally, a few ATC that I did as a trade for my Yahoo Group done in the style of In the style of Karin Kuhlmann. If you have not seen her work, do look it up.
She does beautiful digital work. I haven't even come close to representing her, but I enjoyed trying.
Aqua Markers, colored pencils, Sharpie pens.