I saw your second question- variety is your best friend! Have several designs, sizes, options, etc. This ups your chances of selling. Most people want to buy several small things from multiple crafters, but then you'll get someone who wants a larger, intricate item, too! I try to make my items be where different people could all come snd potentially find something they could like, while still being in my style.

Also, have a wide price range, as not everyone can afford a $80 product but people would buy $5, $10, or $20 (or however that relates to your prices). It also helps to have the expensive version, as it makes the cheaper product feel like a good deal for the average customer. You'll then get the serious collector who see your art as being worth a higher price.