What I did
I was asked to design an interface for BT.CX to facilitate the purchase and sale of Bitcoin. BTCX are a Swedish company, so the following screenshots are in Swedish. I designed the site & the interactions, Carwyn Stephen developed it.
BTCX wanted to have two forms on a single page (left is Buy, right is Sell) so to facilitate that I designed an interface that was semi-collapsed when you first visited the site, to avoid overwhelming users.
Upon clicking on a form on either side, the forms animate. One disables and the other expands.
Here's a page for changing orders. The header is a summary of what the order currently is. "Stopp" aborts the transaction.
Here's a receipt