Quote from e-freakAs a matter of fact I've currently recreated a lot of HL1 Textures as well and I think you've got a nice start there. Though I'd recommend to watch out for oversharpened and to contrasty edges and you might look out for this little more significant scratches like in the middle of the lowest tiles there it would repeat obviously.
Thanks e-freak for your feedback ! Could you edit my file to show me the scratches repeatition please ?