Have you performed any magical acts?
Yes. i have performed small magical intentions like setting intentions with candles.
Do you agree with the idea you can change your belief and that will affect your life?
Yes, I agree magic can shift your mind set and when beliefs change your energy and action follow. when you belief in a certain thing you begin to make choices that reflect that and your life changes.
do you agree with the idea of the phrase as above so below?
yes, I agree with that phrase to me it means that the spiritual mental or emotional realm reflects in to physical world.. our energy crate patterns that shapes what happens around us.