Well I think you need to change the
tezzeret's touch,or add more artifacts. If you want to get the full potential
tezzeret's touch i think u need to add more artifacts, which also can help you to improvise.
So, maybe doing this things change a little the deck but if you want to play it like this I reccomend you to add artifacts like
Servo Schematic,
Bone Saw or
Cathar's Shield, also cards like
Metallic Rebuke or Reverse Enginner. The Herald on Anguish will be much easyer to cast and the Ornitropter will help in order to improvise or atack +
tezzeret's touch with a 5/5 with flying.
Well thats all, also take a look at
Weaponcraft Enthusiast, its quite usefull if u want more Servos
PD: I totally recomend you to change
Renegade Map and
Prophetic Prism, even if you want to do another kind of deck which is no the one that i said