IMHO : get and develop some ideas1st : get an idea what kind of mod you wanna make : Single Play or Multiplay2nd : get an idea what the mod shoud be about, kinda "story" behind which determines the look and the atmosphere you wanna create3rd : get an idea of what kind of game-play you wanna ccreate : fast fighting, long fighting, easy fighting, hard fighting, fighter-based or more capitalships to play with, less fighting more exploring, .....then search for what is needed for