I've started weights 2 years now, and I'm having difficulties getting my biceps and shoulders bigger. I've tried all sorts of exercises and even contraction (squeezing) and slow negative as a lot of videos suggest. I have tried all sorts of exercises for shoulders and arms and I'm not seeing that 'ball' shape form on shoulders.
My arms are naturally thin, some guys have naturally bigger arms, I don't. Which is why I'm struggling.
The bigger muscles the back and chest, I have no issues.
Am I being impatient? How long did it take for you to see shoulders and arms get a good size or at least form?