On the TV show Away outdors the older fellow went into some detail as to how he did it and I thought it was pretty clever. This is from what is left of my memory.

First as stated already, be scent free while doing/touching any and every thing. This guy was wearing latex gloves.

Second as stated already, you want to locate the mock scrape near an existing one that is active. It should have a lick branch above it. He got down and sniffed it! Made a face and said it stunk but that is good. He then used a rake and scratched a 14"x24" or so scrape in the ground. It looked like a deer hoof had done it actually.

Here is where it got weird but also sounded very smart. He had a ziploc bag with him that he had filled by shoveling up another scrape from another farm! An out-of-towner was in his turf!!! He dumped it out and then produced an small bag that contained some of that bucks droppings and laid them out.

Above the mock scrape location he pruned a branch and slipped on a simple PVC pipe "Y" made of what I thought looked like CPVC (for hot water, a little smaller and tanner than reg.) onto the pruned end of the branch. Into the two end of the Y he produced a lick branch pruned from this other farm and slipped it into one of the ends and turned it upward just a little higher than the lick branch at the original real scrape. He said that was to tell the real buck that he was bigger and wanted his doe. In the other he installed a doe lick branch and turned it downward to a doe height. He dribbled some sort of store brand mock scent on it and left for three days. When he came back the mock scrape was 2-3 times bigger than when he left before! He also warned about hunting too close to the scrape.

Good luck with this. Might look to see if there is anything on A-Way Outdoors web site.