Would you says these are good enough to make comics
I'll chip in my 2 cents... 1) Comics don't have to emerge from an empty page into a finished publication in one session. Most of the time, a lot of "pre-production" goes into the comic - writing the story, desiging and laying out the panels. I think that in Manga it's called "Namae" or "name". Basically - you're more than ready to start planning and laying out and working on stories. 2) The best drawing in this group is the one of the man carrying the woman, because of the solid construction. I think you should focus on building up your construction skills - drawing mannequins and solid shapes. That's more important than getting the shading and other details right. Why? Because it's more important to be able to rough-out and sketch than it is to finish and render - since you'll do a 1000 sketches for every fully rendered drawing! And because getting a solid foundation is actually 90% of the work, too. I'm not a comic-book artist, just a 3D artist who likes to draw :3 but I hope this is helpful
You don't need anyone's approval to make comics. Just make them. I highly recommend it. Nothing I've ever done has made me level up more than the comic book projects I've worked on.