A workspace layout to be used on Surface Pro or any 12.9" tablet. Enjoy.
This layout is optimized to be used for right hand drawing and using left hand to select different tools.
Preview:

Advice for best experience: Please make sure that the following Windows Ink setting is turned off:
Windows settings>Devices> Pen & Windows Ink>Ignore Touch input when I'm using my pen
When this setting is deselected you are able to draw and select tools at the same time. If this is turned on you will experience that you have to take your whole hand of the screen to be able to select other tools with your left thumb. This slows down workflow which is undesirable. So for increased and proper workflow this setting in Windows is best turned off. This setting is only an advice, not an requirement!
See provided screenshot for visual explanation

Please 💗 if you enjoy my work. :)