Am I missing something but why hasn’t the brush size got a slider instead of keep entering the size on the key board? I’m using a iPad Pro 12” with pen. I found it slows things down to keep bothering sizing the brush this way, I’m so used to having a slider and does it act on pressure so more you push the bigger the stroke? The colour it done in a slider way and simple to use, but that brush size thing is not making me bother using this app..