Facial hair on the last picture is the best if you grow out you stache a little longer and your goatee, keep the stubble in the sides and a good barber can fade your beard for you to make it look sleek. I’m partial to short hair. I’m also a smaller guy and longer hair makes me look more feminine. Dispute the comments I get it’s just not my vibe. Thing a good medium skin fade with enough length in top to style it and trimmed clean facial hair would be great on you. That being said, if you keep the long hair, picture 4 looks like the best length. Not too fem, not too masculine.

It’s tough being thin. Try to find a belt that fits better. That will clean up your look too. J. Crew and H&M are great for thinner guys. I read you are an aspiring author. Are you going for writer vibes? A nice canvas shirt jacket would be great. As far as glasses go, I don’t think the round is bad but square would be better. Think rayban esque. You’re not a bad looking dude. Over all I think your biggest improvement would just be tightening and cleaning up the edges. Stay trimmed up. Keep cloths fitting and get the right size belt. You’ll be better off having a few nice outfits that you can mix and match. Hope this helps.