I've been in a few swaps over the last couple of years. It is a great way to have 'a little piece of art' from each participant in a retreat.
You can use many methods!
Dragonflies = silk with machine free motion and beading. (above)
Chinese New Year = 'shaker card' with sequines trapped under sheer fabric
Traditional = photo of a block from the only traditional quilt I have made, printed on fabric.
Teal fish = silk with free motion embroidery.
Plum abstract = fibres attached with embellisher.
Brown dragonfly print = applique & free motion embroidery.
Turquoise abstract = free motion on mono print.
Pink & blue abstract = free motion on mono print with stamping.
Size 2 1/2" x 3 1/2"
Information for the back: your name, location, date and theme of card.
I use the 'honeycomb' stitch on the edge. Satin stitch will work, but it tends to stretch the fabric as you sew.