Your origami earrings are super, super cute!! I can see that they should sell really well to teens - your prices are very reasonable, too. I love the fact that you've gone beyond stars and cranes into unusual items like the little shirts, planes, and (my favourite) strawberries!
You have a definite gift for paper-folding these teeny tiny 'jewels'!
However. I do agree with Evey on all counts:
Better photography - definitely. Some of your items don't have detail shots, or all-round views (tiny cat earrings seem only to be viewed from the top, or front, for some reason). If you can't find interesting angles for things like the stars, use plenty of detail shots and get in nice and close. You'll definitely need a good macro capability for these tiny goodies.
Ditch the hemp? Yes, I would. You could try making the same items in a nicer yarn, but ... nah. Your origami is unusual and cool, but SO many people make simple hemp bracelets, you'd need to have something super cute and original there too - if only to fit better with your style of shop.
Also the promotion - it really does seem to be very, very important.
Now, the harsh bit.
Your earrings do not look finished. Every single one which I looked at has loose threads sticking out top and/or bottom. :(
I don't know much about origami, but I can think of two ways of finishing a thread. One for now, and one for the future.
For now, get yourself some nice quality jewellery glue with one of those pointy needle applicators and just dab the tiniest amount on those loose threads and tuck them down tight. Then I'm afraid you'll have to re-photograph .. but you were going to do that anyway, right? ;)
For the future, there must be a way to sew those threads right inside your little paper models. You'll need to start off with much longer threads, but to finish, thread your loose thread onto a fine needle, and push it carefully right back inside the model and out the other end - but don't snip yet. Do this with both ends, and THEN take a sharp pair of pointed craft (embroidery) scissors, pull each loose end as tight as you dare, and snip as close as possible to the model (being careful not to damage the earring in the process, of course). The thread end should disappear back into the hole it came through, and voila! No hanging bits.
Do you think that would work?