If you wish to create a crosshair from scratch, edit the one you already have or use a professional player's one, [ Register or Signin to view external links. ] is the map for you.

How to get it:

• Go to the link above.
• When the page has loaded, click the green subscribe button. The map will then be saved into your workshop tab in CSGO.
• Start up CSGO (or if you're already on the game), go to Play > Offline with bots. Now, at the top it should be highlighted on 'Common', you have to click workshop.
• You should see the map right there, just click the map then GO.
• The map will load and you're sorted!

If you wish to use a pros crosshair, have a look at the crosshairs on the wall, when you find one you like, just shoot it and it will be set as your crosshair.