I Have designed my own Headway T-shirt and got it printed via a website called streetshirts.co.uk.
All I got to see online was the actual design of the shirt that I made. Delivery was quick, I ordered on a Saturday and the shirt arrived on a Tuesday.
Oh on the back of the shirt, it says "... Until you read the contents" and at the top/back it says "Service user mentor" as I am a volunteer for Headway.
I think the outcome of the shirt is pretty good, what do you guys think?