1-Put the .smx file in addons/sourcemod/plugins
2-Unzip the file "Sprays with scale in 0.5.zip" in csgo/ directory
3-Configure this file for add custom sprays addons/sourcemod/configs/csgo-sprays/sprays.cfg (opcional)
4-Configure the cvars generated in the new file at cfg/sourcemod.
Note: I ported all sprays from CS:S to CS:GO for can be usable in this plugin