First WHAT IN THE HELL ARE YOU DOING IN THE AVATAR - was that some kind of Halloween ritual ???
Second:
Ask three paperhangers about paper over panelling and receive at least five different answers.
Need to know some details begore I can give you my top three answers.
What you mean by "fake" wood?
What is the surface - like contact paper, or something else.
How deep are the grooves?
How secure is it - are the nails popping?
What do you mean by a "paintable
liners"?
The general principle is to wash off any wax/greese. Prime with something that will ensure adhesion. Paper with something that will bridge the grooves. There are other steps and proceedures, but I gotta know the details asked above. One of the embossed papers may hide the grooves.
BTW, many years ago (12 -14) over our fake wood paneling (cheap 1/4 ply with a printed pattern on top), I sanded, secured loose areas, preped with a 100% acyrlic prep coat (California's Prep n Size), installed a heavy duty non-woven bridging liner and then installed a cheap pre-pasted paper. Still looks OK - well except for the 12 - 14 years of stains, fades, and scuffs)