You can haz critique :) First and foremost, add more items! Your flowers are very cool, but people like a certain amount of choice. Adding more colors and different styles will give people who come to your shop more chances to find something they want to buy.
Also, work on your titles. Yours are much better than a lot of new sellers, but I think that you should change them up a bit and have some that are Paper Flower Bouquet..., Paper Tulip Bouquet...., etc.
Next, tags work best when they use multi word phrases than single words. Think of what someone looking for flowers like yours would type into the search bar and use those phrases. Red paper flowers, paper flower bouquet, paper tulips, tulip bouquet, red flower bouquet, etc. You also might want to change the category to paper goods or home decor for some of your listings.
Finally, have you considered making bridal bouquets? A lot of brides are opting for alternative bouquets these days so that could be a good market for you. Good luck!