Ok stop, sit down, and learn to draw. This looks like a mess man, the character designs aren't shit but they aren't all that spectacular either. This looks really bad and before you go and make a whole comic looking like this you still need to know how to drawwwwwww. The coloring is too all over the place, you obviously don't know how layering works and that in itself is an ordeal, before you tackle that you should know how to draaaaaawwwwwwwwwwwwww. Both characters look deformed, the head are different sizes, your lines are shaky as fuck.
Pick up the book "Fun with a Pencil" by andrew loomis, and his other books. Go over that a couple times then watch Proko and Sycra on youtube. Then AFTER you have an understanding of how anything works, go to CrtPaint.com for help with digital painting.