No I didn't draw it unfortunately. I found it on tumblr. It was tagged only as USS Voyager with no source poster since they deactivated their account. It's too cute to leave unshared to the world so I happily make it available.
Just spent some time running the pic through image searches.. and that's how we learn that there is such a thing as giant porn. Apparently really giant women are a thing, though they weren't a thing in Land of the Giants. See how I tie the thread together like the proverbial rug. All I found otherwise was this, though it doesn't tell us who made it. (not porn) http://www.projectharuhi.net/?p=8378