Instructions
Importing Your Spray
Launch a Steam game, such as "Counter-Strike" or "Team Fortress 2." Click the "Options" menu option, then click the "Multiplayer" option. The multiplayer options window will open and display all available multiplayer settings, including spray controls.
Click the "Import Spray" button. A file browser window will open. Click the "Up" button in the upper-right corner of the file browser window to go up one directory level, then double-click a directory to enter that directory. Navigate the file browser window to the directory containing your prepared spray image file, then double-click the spray file. The file browser window will close, and the spray will appear as your current spray image.
Click the "OK" or "Apply" buttons to close the multiplayer options window and confirm the spray change. The imported spray will now appear whenever you press the spray key ("T" by default) during gameplay.