My 21st Invitation

I created this over a year ago for my Back To The Future themed 21st.. It came about as a result of general tinkering in Photoshop, with a vague idea of what I was after in my head.
The invitations were on A5 size paper, and the clockface was overlaid and pinned in the centre (with a sector cut out to allow reading the invitation details by rotating it).

I also printed it out A1 size and had all the peeps there sign it.