OK, this might be an impossible challenge, but I'd like to give it a shot. There are 50 Jay Lynch 2011 Halloween sketches, all shown in the new comic book. In order to complete the comic checklist, we need to see each Lynch sketch and the number, and then match them with the panels in the comic. Even if you don't have a comic for reference, if you have a 2011 Lynch Halloween sketch, even in passing during a deal, please post a pic here, along with the sketch number!!
So far, I know 2 of them -
Sketch 569 is page 6 (B) and panel 4 (C)
Sketch 310 is page 8 (B) and panel 17 (C)
I'll add pics later.