If you want to further minimise/mitigate any palm rejection issues with Apple Pencil/third party compatible, Bluetooth stylii, I always wear an additional special, inexpensive, non-body electrical conducting, Lycra material-based drawing/writing gloves for touch screen devices that allow you to lay the palm/side of your hand on capacitive touch screen tablet that isolates your actual hand from the tablet's screen so it will not send any stray electrical signals to the tablet’s screen and not make false or accidental touches while using an iPad or other capacitive touch screen device while writing or drawing.
Something like this found on Amazon.
https://www.amazon.com/Professional-Anti-fouling-Drawing-Tablet-Graphic-Right-Ha nd-Left-Hand/dp/B017R8M2JY/ref=sr_1_1_sspa?ie=UTF8&qid=1543548123&sr=8-1-spons&k eywords=lycra+drawing+gloves&psc=1
Many more makers of these types of gloves found on Amazon and in different hand sizes and colors, as well!
Best of Luck to You!