Once realizing
that the difference between IONIAN and LYDIAN lies in where the half steps are placed, it's pretty easy to work out the layout of LYDIAN scale patterns on the fretboard.
This second video of this SERIES ON MODAL MASTERY dissects this difference between these two major modes in each of the five positions and around lydian-typical chord voicings - resulting in a lydian chord/scale practice regimen to work out, work up to and master one position at the time.