If you've noticed a lot of comic strips are written by pairs of artists - one produces the physical art, which does require a deft sense of visual humor and the other does the verbal humor, which for many of us is a separate skill and one we may or may not possess. I, for instance, get ideas for comic treatments and can do some rudimentary drawing, but my drawing isn't funny. Johnny Hart and
You can't just tack talking balloons over stick figures and convey the humor. Some people manage it with quite elementary drawing skills, but they have that gift of visual humor, even with crudely drawn characters.
Charles Schulz's characters were not highly detailed and he had practically no scenery to speak of. Technically, Rick, you're a better physical artist than Schulz was in many respects. Your characters have a nuance to them that's hard to capture for us merely mortal scribblers.
If I could suggest a career track for you, I would recommend finding a wordsmith - someone who has a gift for creating the taglines.
Your cartoon above, for instance, could read, "Uh, Ref? How come there's two of 'em now?"
"Hey, Billy, I'm really rethinking this whole taking-Taibo-with-my-ex-wife thing."
Dilbert's creator, Scott Adams gets tons of ideas from his fans through his busy e-mail correspondence.
You've definitely got skills in the drawing department. Find a partner to help you make your stuff screamingly funny and you'll be set.