Not bad! I'd say start the comic. Here are my constructive crits, though, since I like critiquing people. I'm not sure if I'm even qualified, haha.
1. This is a big thing - shading. I've been meaning to draw up a cute tutorial for a while, and since I'm procrastinating, I will now. You can find this in plenty of places but here is my version.
Okay that is very quick (I'll do a better one eventually I guess) but hopefully it gets my point across. Choose a light source in every scene and stick with it. If there is more than one light source, consider both of those. Take two lamps, turn them on, and hold your hand between them. Two shadows! I like that your comic is stylized but just keep shapes in mind.
2. Continuity? He is bleeding in panel 4 but not in panel 5.
3. Drawing the human figure is haaard. I have trouble with it when I'm not drawing from life. Always draw people around you; make your friends do short poses, etc. Invest in a good anatomy book. Practice practice practice. Your ears look off to me - I think they need to be farther back and a bit lower.
Hopefully this was helpful! Definitely keep at it. I'm too lazy to start my own comic so I always feel weird giving advice, haha.