The question is subjective, vague and at the end of the day asking after how to learn an entire art form. What kind of origami style are they going for as there are several? People learn in different ways: that fact allowed that question to attract many different plausible answers. It usually boils down to practice anyway.
I would think very few people become instant artists.
If this question was new I would have voiced these concerns to the OP, but it's already got votes and answers.