Facebook isn't brilliant now that's because facebook wants us to pay for promoting. You will need to first set up a personal page but then if you post too many links on your personal page they'll see it as spamming.
So once your have set up your personal page you'll need to set up your business page.
I would suggest not relying only on facebook and twitter, but also use pinterst (pin it) button is next to each item you list on Folksy.
I would also suggest using Craftfjuice, google+, wanelo, maybe instagram and any other social media platform you can think of.
The more places you promote the wider audience you'll have.
Also think about who are your target market. ie baby items would go down well at mother and toddler groups so see where they are in your area and pop in a flyer or two, maybe get permission to show some of your items.
Get some business cards so you can hand them out to friends, associates etc etc
You do need to put in measurements for your hats length and width.
I notice you say tracking is an extra option for a customer. To be honest tracking is for the sake of the seller not the buyer. It covers you in case a buyers says something is not delivered when tracking shows it is delivered. I would suggest tracking with signed for any higher priced item.