As others have said, you already ARE countersteering. Although, if at speed you find your front wheel turning IN to the corner rather than OUT, then you need to increase the front tyre pressure. Even 1psi can make a difference. Either that or you need to get more heat into the tyre (which increases pressure) before pushing the bike to hard. You're chasing a 4psi increase from cold to hot.
You need to focus on where you want to be. Spot the point where you want to be at the end of the corner and you will naturally steer the bike towards it. If you cant see that, then aim for the inside of the turn until you can. You need to turn in as late as possible, this will force you to countersteer hard into the corner. Making one swift hard move.
To understand it more, if you look at my profile pic, you can see that the bike is over as far as it can go and the front wheel is clearly pointing the opposite direction to the turn.