I sent a letter to the address for his production company I believe a month or two ago, I think it was in L.A....
Today I got an envelope back with my US stamps crossed out and a Royal Mail thing instead (so it came from the UK). The photos are slightly smudged since they were not dry before shipping but that's ok because the fold out poster is fine.

I sent: 1 letter, a drawing, 3 photos/1 guide-fold out poster protective sleeve SASE & this was my second try.
Rec'd: 3 photos, 1 guide signed + FAQ letter




Please don't remove my pics with out asking. xo
Looking online I'm not sure if it's authentic now but I think it's cool either way. ;)