Good morning!
Beware of self appointed experts talking **** on forums
What other tips you have to be a safe pilot?
Only one: Be skeptical all the time. Never assume, always verify. Trust no one (including yourself!). If in doubt, check again. Re-chek if necessary. As long as this might take.
Your rules above apply only to the act of flying itself. But there is much more involved than just the easy bit of piloting the aircraft, especially in business aviation where you don't have much support from a big airline organisation.
The big problems you might encounter in flight always have their origin in very little problems/lack of care hours or days before the flight. So always take the time it takes. Never accept any shortcuts.
Happy landings,
max