Congratulations on your first sale. It takes constant work. Read up on SEO, tags and photography. Particularly review the item you sold and see what you did right on that listing and replicate it
For SEO there is a great team:
http://www.etsy.com/teams/12360/friendly-seoAlso search in teams for newbie teams as there is a lot of great information out there
Google sassy critiques as they have great shop start up checklists.
I still constantly revamp photos, my about page, my policies, my shop welcome.
Create a checklist and pursue it
One specific thing to do is your tags. Instead of saying pink say pink blouse. Instead of saying blue say blue bow. Try to make your tags phrases where possible.
Pretty clothing, you should do well with a little work