Hey there Thomas, do you think your lip was rolling before Xmas and you have only just noticed it? If that is the case, do what you did in the first place to find the placement.
If you have been doing it all along, watch each video closely and slowly, it is explained in great detail through the Foundation Level. MmmmAaaahOoooh, tissue, visualiser, mp, lp etc etc.
Cheers,
Greg