Your clutch control will become better when you ride more. The hardest part of a clutch is when pulling off from a stop, you want to let the leaver out really gently & slowly. This will help you find where the clutch engages, you dont need any revs at all in most cases. When you find the place where the clutch engages, the bike will start to move even without any throttle. Just give it a little throttle and loose the clutch out fully, then you're good to go. When you're moving, it doesn't really matter on how fast you loose the clutch out. You want to shift at a mid-way RPM, so the engine doesn't lugg in the next higher gear. When shifting down, make sure you're in relatively low RPM.