Please do not use negative training yet!!
At eleven weeks your pup is still an infant, he is going
to have accidents. Keep throwing him a party and telling him what a superstar he is every time he goes outside where he is supposed to. Eventually he will get it, but if you lose your patience now all he will learn is not to go when you are looking! Potty training is frustrating, I know, it takes a long time. Lilith is eleven months
and still decides to pee on the floor every few weeks just to see if it's okay this
Look in the training section for lots of other suggestions on potty training. There is a bunch of info already here! Good luck, and try to stay patient!