looks pretty nice. Imo the texture on the arms could improve, to me the highlighted areas look too white and unnatural. I guess you used an occlusion map but personally I like to bake in some more lighting/bump details into the texture.
I also think the leather diffuse could improve a bit. I’m not the best texture artist but I think the highlights/shadows in the diffuse are too strong, I think you want the specular map to handle more of the highlights for you, maybe make the specular map brighter and tone down the diffuse a bit, it looks too light/white to me in the highligts, and the shadows are too strong. I would select the white areas in the leather diffuse and add some yellow or other color overlay. I guess for a game character though having those strong shadows is preferable depending on the size of the character in-game, what I think would look nice is if you softened the edges and bleed the shadows out a bit, and maybe add some purple or blue to the shadow color. It’s mostly the shoulder area that I’m referring to as it stands out to me.