for hand painting i second the 3d coat recommendation. http://img05.deviantart.net/674c/i/2015/068/b/5/golem_bust___part_2___texturing_in_3dcoat_by_turpedo-d8l2e3b.jpg
Got a sneak peek of it at the GDC Polycount meet up and it was already amazing back then, the final product must be crazy awesome with good information. :B