Character Creation (Olyptia Supplement)
From D&D Wiki
 Advice on Character Creation
 Compliment Party
When creating your character, check with the DM as to class restrictions and/or Alignment restrictions and choose a class accordingly. Choose a class that will best compliment the other players in the party, a group of pure fighters will surely die if they enter a wizards lair without a rogue or spellcaster, keep that in mind.
Make a personality for the character and stick with it. He can be greedy or charitous, evil or good, drunken fool or pious priest the choices are endless. Make your character memorable for both the DM and other players.
Make a backstory for you character. Tell where he came from and some of the events in his/her life that led to them being who they are but leave room for character growth.