Searching High-Res Versions of BM trading cards; Help please

Greeting BM-Community,
I love awesome gaming wallpapers and especially steam trading cards and profile backgrounds are an awesome source for good-looking wallpapers. I have a huge folder with lots of pictures changing every few minutes.
That said, a few Black Mesa trading cards (especially the three linked below) would make awesome wallpapers, but sadly have a low resolution/bad compression. Has any Dev or user a higher quality version of these pictures that they could provide? I would really appreciate it.

The Trading cards im especially talking about, although It would be awesome, if there were high-res version of any trading card and steam profile wallpaper:
https://cdn.akamai.steamstatic.com/steamcommunity/public/images/items/362890/9cbc3cec9ce7664538245d9d3d84acd80efdc8d2.jpg
https://cdn.akamai.steamstatic.com/steamcommunity/public/images/items/362890/3e26df48ae249d2b8e7ac7e6b20c909c9e9eb4fc.jpg
https://cdn.akamai.steamstatic.com/steamcommunity/public/images/items/362890/cbd6b3590a4f68e722a54eb17c017761d0010481.jpg

I also noticed, that two of these are actually edits of media pictures from the BM-Site. These unedited pictures have a significantly higer quality, so there could be high-res versions of the edited ones as well…?

Also if anyone is interested, an (outdated) collection of my wallpapers (most of them HL-related): https://imgur.com/a/LyUpP

Sorry man, I dunno how much more you can get out of those exact images. They’re already in 1080p, and the compression doesn’t seem all that bad on my end.

Founded in 2004, Leakfree.org became one of the first online communities dedicated to Valve’s Source engine development. It is more famously known for the formation of Black Mesa: Source under the 'Leakfree Modification Team' handle in September 2004.