Any tips on training Oliver to sit on a blanket on my the couch? I just bought a brand new couch and I would like him to sit on a blanket when he gets up on it. When I am home, he does fine and will only come up after being "invited". But when I get home, he is inevitably on the uncovered area of the couch or sitting along the top of it! I don't want to have to start putting him back in his crate when I leave. He is so good on his own in the house!