One of these two is what I would start with
if you've never done embroidery beforeand want
to try it. they are simple and have fairly simple
curves and are of a univesal enough theme that
you could make it for a favor and give it away
to nearly every one.
The top one is nice to try first as it's merely
long lines, prolly with two or three rows of
beads, so you could finish it fast. Or if you
wnated you could fill the holes in.