it should be known that you can E-smite and the smite damage will go through first for a quick execute on camps
(you should also be using E whenever it is off cooldown)

As soon as you can leave fountain run straight to river and place a box at the opening from river to raptors, at 0:51 place a box inside raptors, as soon as it comes off cooldown place another box. next box goes at the red buff entrance but NOT CLOSE ENOUGH TO TRIGGER IT.

now kill your raptor camp and Q over the wall to red, place a box just behind it and start attacking, if done correctly the buff will walk into the second box and be cc'd for 4 seconds total, prioritise backstabs.

after killing red you can Q over the wall and place a box on top of the big krug and start attacking (use a refillable potion here if applicable). use the large krug to block the smaller one from attacking, smite the large krug and use boxes whenever you can to finish off the camp.

this is an ideal time to gank top/mid

moving onto blue side you can place a box on blue and press E just after attacking from Q, it will be off cooldown by the time the blue is in execute range.

after blue go to crab and trap it with a box then kill it.

you can now gank bot/mid

clear gromp with a Q-backstab and box.

after gromp Q over the wall, place a box, backstab a small wolf and press E instantly after, you can now attack the rest of the wolves and the first one will die on its own.

Very simple process
1. Clear side of your jungle
2. Gank mid/sidelane

When objectives are open you should try to
1. Clear
2. Kill
3. Objective

After a successful gank/objective if you are on high enough hp you can invade too.

DO NOT USE Q IF YOU DONT HAVE TO

THIS IS NOT MY VIDEO BUT I DONT KNOW HOW TO EXPLAIN THE Q GANKS THROUGH TEXT

To gank you should enter a lane, place a box behind enemies but not too far that they can walk away and not too close that they can kill it. then start autoattacking, your slows will help you ensure the enemy dies, if the enemy is too far away you can E to slow them and try to kill with autoattacks (this is not recommended).

if you think a gank will result in a kill you can ignite early to make the enemy especially low and into your E execute range, you can also E-smite/E-ignite champions to try secure kills also.

AD Shaco ganks are incredibly similar to AP shaco ganks but rely much more on autoattacking, you should do the same with boxes, and aim to get all 3 hail of blades attacks. (usually an ignite + 3 HoB attacks + E will kill an opponent if you are doing well)

you can use E to slow far away lane opponents with AD shaco since your autoattacks do more damage but it is still not recommended as your E execute is strong regardless.

ESSENTIAL TOOL
Keep some boxes behind you at all times, this means that you can survive all ins and jungle ganks easily as the enemy will be feared and you have chance to run away, this also gives you safety when poking with E as you can just fall back if they try to retaliate.

RANGED MATCHUPS
Poke with E when it is safe to do so, farm when it is safe to do so, unless you can get camped or establish a strong early lead this lane will be hard for you. Roam as much as possible and don't be afraid to KS since its nearly impossible to farm.

MELEE MATCHUPS
Melee matchups are easy since you can safely poke/farm and retreat to your boxes, careful not to overextend without wards or escape tools as you will most likely die.

ADDIDTIONAL NOTES
if you are confident in your Shaco limits you can bait enemies into a box trap, I advise using barrier just in case you miscalculate. often assassins will charge a low health enemy and so you can setup a trap and force them into your cc for an easy kill.

place boxes out of vision if you are trying to bait, as the enemy will not expect them.

Similar to ganks but Q is essential, I will split this part into support and sololane.

SUPPORT
(if your adc is Jhin or another adc with cc kills are incredibly easy)
Q forwards (from a bush preferably), place a box behind, and just autoattack/E until you kill them. be sure to use early ignites as most botlanes have some kind of healing ability.

SOLOLANE
Using Q to engage
Q forwards and kill them as if you were ganking a lane, try to dodge abilities to avoid taking damage
Using yourself as bait
Sometimes enemies will try to kill you when you are low, use this to your advantage by setting up a lot of boxes and baiting the enemy into them.

AP SHACO
use your ult as bait to try and get a large CC, this can easily turn the tides of a battle. You can setup boxes prior to fights and engage when an enemy steps in it. late game your E-Ignite should be enough to kill a stunned enemy.

AD SHACO
Your job as AD shaco is to kill the enemy carry and get out as quick as possible, you can also kill the backline and use R for some easy cc teamfight victory.

Your R can be used in many ways,

1. Dodging abilities: use ult to dodge important abilities like CC or Executes, after this you can engage with your clone for a usual free kill
2. Ganking: use ult to gank a lane, when they kill the clone you can Q in and clean up the mess
3. Info: your ult cd will be ~30 seconds which means you can use it to check important objectives. if they happen to be taking the objective they will kill the clone allowing you and your team to cleanup
4. Escapes: your R can be used to go over some walls:

part of dragon pit
part of baron pit
the wall between wolves and path to blue
the base gates

5. Engaging: use your ult as a kamikaze to start teamfights.