As far as consistency goes...That will come with playing. The more you play, the better you'll get. My first guitar teacher once told me that "in order to be consistent, you've gotta beat something into your head until you can practically do it sleeping...If I teach you a riff and then I call you 5 years from now and ask you to play it the exact same way I taught it to you and you can do that, then you're consistent." The only way to do that is by practicing the song over and over.
It may sound like a lot of hard work...But, it's not really hard work at all. It'll come with practice and experience.