I actually quite liked these. I think that comics in general aren't funny, but some people do. And these people will buy your comics if you out them on sale somewhere. Also, Nerdcubed started off with comics, then did youtube.
Keep doing these, but instead of making new threads for every single one, you could possibly have a single thread where you post all your comics, it will save you for a whole load of dumb ratings.
Easter egg on the first one might be that the small car is parked sideways in it's parking spot?
On the second comic it might be this gokart thing?
You need to improve on your posing on GMod, there's a couple of mods out on the steam-workshop that should help you.
Alright start but it needs more work 'n polish.