Anyway, about making up your own deity, god, whatever you call it, I'd also add that I don't think it's possible to absolutely exclude any prior notions of God before you decide. Your own ideas of what constitutes a higher power or supreme being, whatever it is it you, will probably share common traits with other's, because they are likely to fill similar needs and roles. For instance, if your idea of god is that of a philosophical nature, as in "god" as a metaphor for the physical world, or as the driving force behind the universe, you might find it easier to study Eastern Regligions like Taoism or Daoism to help you shape what is meaningful to you.
On the other hand, you might think God is more directly related to your life, guiding us or commanding us. You'd find more helpful ideas, in that case, in modern Christian theists, or Jewish theists.
What I'm saying is there is nothing wrong with developing your own "religion" or notions of "God" from those that you feel might be insightful, helpful, or similar to what you believe is "true".