Lucky, that looks great!
Archie gives good advice, some of the more reconginzable hl2 textures should be avoided, unless you are using them on small trims or stuff in the backrground. (don't get me wrong, i'm very guilty of using the combine textures myself!)
You can also play with the texture scale to get a new look for an old texture in a pinch, but i would advice almost alwyas try scaling down and not up, because upscaling makes them look too blurry.
for the place you used the chronme texture, instead use any metal siding texture, and it should look/match perfect to the original afaik.
Here's a small teaser of my work so far, first compile!
We need like 5 weeks to finish this, but i guess we'll have to make it work in 5 days (4 days, 7 hours actually). We are so screwed! =P
I think i'm going to download
tophattwaffle's real world texture packs 1 & 2, so i have fresh materials to try....
Archie: do you recommend and good materials packs out there available for download sir?
Murby/Uoaby: Wonderful work you two; there is a lot of talented people here on this little site, jee-whiz!