first- All you need to do to Fly Glitch is jump to the corner or ledge that you want access to
second- ***While in mid air you rapidly press printscreen*** (next to insert, doesnt really print screen) you will lag but descend slower and can reach ledges from areas you normally cant
, if you jump you will not go further than normal, my opinion is when you jump(or just in mid-air) a gravity script activates and you fall but when you use this glitch and lag, the lag is sort of holding the script from activating
@MadSpicyTaco