For the physical version the only thing I’d recommend is making sure all your pieces of paper are the same size. Thinner paper (100gsm or less) will be easier to flip but the thinner you go the worse the drawing surface.
Digital-wise you could give https://flipanim.com/ a go. It’s pretty easy to use and emulates the physical construction of a hand made flip book nicely.
For iOS users Vinegar is a nice add-on for Safari that strips out all the ads etc.