From the announcement:
The online shop is up! To celebrate, we're giving you a chance to win a free miniature with your order. Here's what you do:
1. Upload a picture of an imbrianarts miniature on your instagram and tag us: @imbrianarts
2. Go visit our shop and buy something! When you check out add your instagram name in the comments section.
3. We'll pick 10 people and put a free miniature to their order!