Whether you like this art style or not is personal preference, I like it a lot and so does many others. It could use some detail refining and touch-up, particularly in the teaser image of them having sex, it looks kinda bland and lacking detail, kinda like a rough sketch. Not bad by any means just when you do a close-up like that and it's not as detailed as you might expect, especially since it's a sex scene. Also blurring the background slightly is probably the way to go since you are using real life images it will drag to much attention away from the actual art. It just looks weird having real humans in the background with no contrast or blurring. If the pictures have no real humans in them it's less noticeable and in those cases blurring might not be necessary, or just a minor blur to keep it consistent.
Also the close-up of her face when she is naked in bed, her upper earlobe is abruptly cut. Just small things like that which matters when you do close-ups. Regardless, as some people have pointed out, even if the art is good the writing can't be neglected and people will lose interest real fast if it's an incoherent shitshow. GGGB is a hard act to follow so good luck to you! I'll be keeping an eye on this one for sure.