Welcome to Smogon! Take a moment to read the Introduction to Smogon for a run-down on everything Smogon, and make sure you take some time to read the global rules.
If you'd like to draw for the smog, simply go to your user cp, select group memberships, and click on join for smog access. Your reason will be because you want to draw for the smog, and you'll definitely be allowed access!