Best way I found was to put a tiny bit on the end of a knife (really tiny) then heat the knive up so the oil goes really viscose. Let the oil run down the knife then smar the whole lot onto some tobacco you have already lined up in a paper.

Be firm when applying, otherwise the tobacco will jus stick to the knife.

Putting the oil onto the paper doesn't work so well, or so I've found anway.

But oil is fucked up man, really good stuff.