It's not terrible (except for the third comic >_>), but you've pretty much just sat and ripped off Super Mario Bros Z, and you haven't even done it very well as there's little to no plot build up or characterisation. It's hard to follow because you have no idea what the characters know, what they're even doing or more importantly, why.
My advice would be, since you're only 3 comics in, to go back to the start and try again with a bit more effort on those points.