Have clear photographs so that shoppers can see what your product really looks like. I usually take one image that is 'Up Close & Personal so that they can see the textures, colors etc. I try to do atleast one that has a white or clear background (Still image) and another with it being used (Lifestyle image)
Fill your shop up. I have only just recently opened on Folksy (my other one is full of items on etsy) so it is still a work in progress for me.
Describe the items listed quite clearly. I always have my 'buyer hat' on when I do this so that I am able to convey a very precise & clear message.
When sent message be polite, clear & respond the same day or at most within 24hrs. Offer custom made orders if it isn't too much trouble to adapt. Customers always love having choices! Like offer different sizes, colours, shapes etc
Hope this helps a bit
Detola & Geek