Hi Ellen,
I might not be the best person to give advices since I didn't have much sale neither but I will certainly tell my opinion:)
First as you said you will need more listing. Photographywise I think your minion and frog hat photos are your BEST , try to make more like those. Bright and crisp and just make me want to look more photos of the item:)
I don't think you need to feature any item at all, since you have less then one page, is usually for pages who got like 3-6 page of listings and they want to show a variety, but here with 14 listing you just repeat the other listings they can see just one scroll lower:)
In the shop announcement I would put slightly more information about your items, that you make crocheted items, anything what a baby would need, etc etc just word it nicely not like me:))
Policies are nice and clear:)
And make your titles longer, one listing only say "crochet owl hat", say something like woodland animals hat, winter hat, Christmas gifts, etc etc:)
Wish you good luck in your adventure:)