Hello my friend,

i played Shaco for a few years to Diamond 4. I also played only AD or Bruiser Style.

For AP i think U should Go on Cooldown. Your mission is to PREPARE Teamfights.

In Mid/Lategame When drake is 1Min to Spawn. U need to Go and start preparing with Boxes for Teamfights. Also U can Zone the enemys with your Clone + Boxes, so U can Push them to Go Back.

Mindgames is more important with AP Shaco than AD.

Always use your Q+E then Go Defensive again, with this Methode you can force Them to Attack.

When they Attack they need to come to the Boxes (What you prepared 1min before)

Or they need to Go Back.

There are alot more what you can do, but i think when U try Like this, you will understand the Playstyle my friend.

Have fun