Skinny Arm Workouts

I work out regularly, have a freakishly high metabolism, and have the hardest time bulking up these skinny twig arms. I am starting to lift heavier, added creatine to my workouts, started eating a lot more and decreased cardio. My question is, am I lifting heavy 2-3 days a week and then yoga, barre, lightweights, full body on other days? What is the best schedule to start seeing results in these noodle arms?