The changes have been based on the behavior of each species has, and thinking about they not like horror props but "living" beings affected by environment. For example, snorks and bloodsuckers (as ferocious predators) with hands and mouths dripping fresh blood, controller and burer got weak eyes and dirty clothes, while blind dogs and cats have skin diseases .
I really like the poltergeist, chimera, blind dog, snork, rat thing that starts with a "T" that I can't spell, bloodsucker, and the burer. Controller needs some work though. One question though: Are you going to change the search ui? That would make this mod a lot better. I would recommend that you continue skinning but change the UI so that this mod is unique over other skin packs.
-Retouched blind bullterrier head
-Retouched Burer shoes
-Retouched Psydog fur
-Dirty head bandages for Controller
-Chimera with dark fur (light colored Chimera from CREATURA is available via Helios Spawn Menu)
-More detailed hands for snork
-Small retouch in Duty Universal Protection suit.
-Less saturated color for Green scientific suit and other details.
-Sakharov got new clothes
@ JondeBoned: Search for "Guide to retexturing" by ImperialTrooper and Reaper´s "Bump tutorial" in Stalker Files, those tutorials explain the basics in making your own textures . As Woopersnaper said, you´ll need a program too. Gimp and paint.net are free, the second one also reads dds files without plugins
(comments and responses, please refer to the discussion thread