Ask yourself this...
"Do I find my comics funny?"
And after you do that, think about this:
Are you trying to MAKE funny comics... as if you're writing for episodes of Seinfeld? Is each comic supposed to leave us in stitches? OR... are you writing for yourself, just having fun, putting down stuff that comes to your mind?
Let me know what you come up with. BTW- I'm not trying to be rude or condescending, I'm totally serious.