i recently got signed comics through the mail from kelly deconnick and matt fraction (they're married, so it was the same address). I also met amy reeder and brandon montclair who signed my rocket girl comic and a poster.

This one (from this post) was my second success from her. she usually sends back fairly quickly, so you might want to try again. but who knows, maybe she's busy with stuff and hasn't had time to sign anything.

I also sent one to her years ago...there is hope!

Awesome! I just recently got Wonder Woman comics back signed from her. She's so good to her fans

Sent an SASE and all 5 issues of Wonder Woman that she wrote back in 2007.
Address used:
Jodi Picoult
PO Box 508
Etna, NH 03750

Sent: 12/2/14
Received: 12/12/14

Sent a package out yesterday to Jodi Picoult to sign all 4 issues of Wonder Woman she wrote. Hope I get them back!!

Sent: 8/25/14 Received: 9/18/14 Address used: Tara Strong Voicestarz, Inc. 10061 Riverside Dr. Suite 899 Toluca Lake, CA 91602-2560 Sent an SASE with a letter and DC Earth's Mightiest Heroes trading card. No return address on the envelope. http://surfmypictures.com/photo/86aea7619740c687/95756/15138...

not sure how long ago :/ it's posted under his "about me"

I'm not sure about the address for the show, but I found his fan mail address on his facebook page: Grant Gustin
1180 S. Beverly Drive
Suite 304
Los Angeles, CA 90035

I always try to send my own photos when I can. I usually just find pictures on the internet (google images, for example) ad print those out. Sometimes I use glossy paper, sometimes just regular printer paper. If you don't have a printer you could send an index card for the person to sign! Occasional...