For these, you can refer to liquid website for guide =P

Sorta following their method of mass siege tank below the artifact hill (between the artifact and your base) focus at left ramp and right ramp only as zergs will rush the artifact, not your base. Get the merc tanks too if you have.

Then put several Thors (2-3 units) on both ram to choke it and block it. Builr the psi in front of the tanks or choke point to slow the units, even without should be fairly easy with those tank firepower.

Get banshees to fly around to hit the nydus worms when they spawn. Careful of those units who can attack air.

When Queen of blade come, stun it with your Thor if you have the cannon upgrade.