Any tips for a dude that want to try it for the first time?

I'm 26yo, 300 lbs dude that already had experience with DMT, but never had nor know anyone that had tried LSD. What is the recommended dosage? (where i live i can only find the paper ones), should i try a whole piece or do half for the first time? I will try it on a safe space, with a trip sitter, but anty help beforehand is appreciated