Hi, Snuggle, me again...lol. Can't really offer much advice on the weeing situation as I have never used a crate. Is it big enough for a bedding and paper area? At ten weeks he is still pretty young and as such can't be expected not to have accidents. A puppy kept in a room overnight for example would be doing well to be going on the paper as opposed to the floor! Also remember it wasn't long ago he was seperated from his brother. So just remember, When he gets it right, praise praise and more praise, when he gets it wrong.....count to ten....and start again.
Good luck
Lisa x