I create Trading Cards for Pixel Shooter game. Steam Trading Cards are already in Steam system, but it didn`t appear yet.
See this annoucement from Steam to understand why this is happening:
https://steamcommunity.com/games/593110/announcements/detail/1954971077935370845
Source: Steam Community (opens in a new tab)
Build and release context
Recorded Steam release date:
Within one calendar day of this post (UTC). The listed date does not establish an exact launch time.