I was looking at this item when I came up with the following advice
http://www.etsy.com/listing/89591073/large-crochet-pinFirst of all, cute pin. You definitely need some more items in your shop. Titles and tags are really REALLY important. I might call this Crochet Flower Pin Brooch. Always, always use all 13 tags. If you don't know what to put in, use a thesaurus to come up with other words for pin, brooch, etc. I would also add "accessory", "flower pin", "floral accessory", etc.
You say you can attach it to a hat or scarf, why not use one of your photo spots to highlight this. "Show" the customer how it would look.
Keep in mind the first 3 words of your title are the most important, you want to put what your item is first, then color, size, etc. Hope this helps.