sharon b (and anyone else) FSL designs come in al sizes. Most will fit the 4 X 4 frame.
I usually use H2gone from walmart, it's $177 a yard. What you do is hoop just the WSS (make sure it is taught in the hoop) and send your design to your machine and stitch it out. Then after it is done, remove it from the hoop and trim the excess off and rince well in warm water and let it dry.
You can use badgemaster for a stiffer ornament.
Badgemaster is also a WSS and looks like a thick plastic wrap. The H2gone looks like teeny tiny holed fabric. You could also use a piece of tuelle on top of the WSS for more stabilization, but I don't normally.
PM me if you have any more questions as I don't want to hijack this post.