Here an updated list of local comic/science-fiction/anime/etc. conventions in the Colorado area in 2018. In this update, I added one that's this Saturday (two days away)!
NOTE: This does not include gaming conventions. I thought about adding them, but decided against it, just because I'm unlikely to ever go.WPL Mini-Con 2018
Gunbarrel Pop-Up Comic Con
Pikes Peak Comic Convention
Chey-Fy Comic Expo
Rocky Mountain Con
Denver Retro Con
And here's a cosplay photo -- Rose Quartz (from Steven Universe) by the pregnant-for-real Sarah Cosmama at Denver Comic Con 2018:
Recent cover scans I added to GCD:
Adventure Time with Fionna & Cake
Disney Tim Burton's the Nightmare before Christmas Manga
Disney Tim Burton's the Nightmare before Christmas: The Story of the Movie in Comics
Donald Trump in "Why Does It Always Rain on Me?"
Incredibles 2: Crisis in Mid-Life! & Other Stories #2 variant