If you would change something tell it me in the comments.

Pros: -Strong jungle / you´re long in jungle without going back
-Your ganks are strong with your taunt
-You safe lifes with your ult or/and your taunt
Cons: -Shen is often banned in rankeds
-High cooldown on your ult
-Only a support jungle (bad in 1on1)

Q - VORPAL BLADE
W - FEINT
E - SHADOW DASH
R - STAND UNITED

R < Q < W < E

Max Q first for fast jungleling.

If you smite the red: Wraith > Red > Anccient Golems > Wraith > Blue > Wolfes
Smiteless red: Wraith > Red > Blue > Wolfes

Only spam your q and w

Look for fights and low life teammate, your ult can change a fight.
Try to Taunt the ADC or AP mid (or a fed enemy) it will be a easy kill in a teamfight.
If you have your ult ready and your team need to push you can splitpush and join in with your ult if your team fight.

Try to come from behind to the enemy and taunt your target if you did it your teammate will kill him ;).
If you want to surprise your enemy you can flash and taunt him then.
If you want to gank with your ult, do it only if your mate really need it, because your ult have a high cooldown. But if you do it you have to taunt the attacking enemy as fast as you can.