The textures are 256x256 are pretty low res, so they dont have much detail. But to get a better PSX effect, select the texture and change filter mode to point (no filter) so it be more pixelated, maybe that will show more detail.
ive tried that it still looks nothing like the pictures above like for example the charectors face is not visible at all. somethings just not working for me with the textures has no one else had similar issues with this model?