Hi!
There is nothing special about covering a foam wing and fuselage with paper...
First you must have a foam wing...and a Foam fuselage.
Then you must have eithet brown paper or just ordianary newspapper(which is lighter but not as strong).
Then you must have a glue to secure the paper onto the foam...either use white glue or aliphatic glue ....or glue for putting up wallpaper.
all of these work the same.
Remember that if you use white glue or aliphatic glue you have to thin it with 50% water or thereabout.

Here is how you do it!
Take the foam wing and brush on a heavy layer of thinned down glue...then put on the papper and be careful that all wrinkles are removed ...you do this by massaging the surface with your hand....!! Yeah real messy but that's the way it is. It is importnt that the surface(paper) gets real wet so brush on more glue/water to make the paper adhere well to the foam surface.
When you are satisfied let it dry overnight. Then do the other side of the wing.

Regards!
Jan K
Sweden