Pyke is a really Interesting champ, in that his bonus health further scales your AD. Keep this in mind while playing and be aware of the enemy team.

Make sure to last hit minions and when the chance arises Use your dash to stun and get some good poke in. If you can land a hook, chances are the enemy midlaner will be shook and you can get a dash stun in. This works well with your stacking AD. Additionally, Make sure to wander often to regen your health and set up kills for your other lanes.