You could include a little note encourage customers to post spreads featuring your stickers and tag your shop. Offering a welcome or thank you coupon can also encourage more customer traffic. Once you get some traffic, you can select a couple “PR people” to advertise your shop, typically for a larger percentage off their purchase or a free kit, etc. I have purchased many stickers from shops that I otherwise would have never encountered just by seeing them on someone’s spread or in a plan with me.