How high should I keep my foot when I'm sitting down? I know it's all about personal preference but should I try to not go over a certain height?

Edit: I play with my right foot elevated and the electric guitar resting on my right leg
I dont think it really matters. I know people who dont lift their leg at all. For me, I use either a shoebox, (sitting flat) or I cross my legs. Either way my right foot is about...4 or 5 inches off the ground. But do what's comfortable.
As long as you're comfortable it really doesn't matter; chances are no one's going to see you perform like that are they? Just make sure to practice standing up too
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