I know its hard to make perfect or at least close to perfect map to work good from start. But there is updates so that's not problem to fix in some next minor updates.
Community need new maps so if you have already make some, please share so other CS2 players can see and vote up or down depend how good map is.
You as creator have nothing to lose but CS2 community can get very good "gift" as new map.
You never know would your new map be put in some new operation, or some new mode, or even in ranked-competitive games.
Guide for WEAPON FINISHES > https://www.counter-strike.net/workshop/workshopfinishes
Guide for STYLE GUIDE > https://www.counter-strike.net/workshop/workshopstyleguide
Guide for THE MAPS WORKSHOP > https://developer.valvesoftware.com/wiki/Maps_Workshop
Guide for STICKER CREATION > https://www.counter-strike.net/workshop/workshopstickers
RESOURCES AND DOWNLOADS > https://www.counter-strike.net/workshop/workshopresources
FREQUENTLY ASKED QUESTIONS > https://www.counter-strike.net/workshop/workshopfaq
I hope it will help you to make map, weapon, sticker or anything else.
Cheers !