Upgrade priorities at Town Hall 11 varies depending on your focus on war or farming.

War FocusFarming Focus
Tier 1Archer Queen, Barbarian King and Grand Warden are your main priorities. Put all Elixir and Dark Elixir you can into upgrading them.

Put all excess resources into walls, do not let them fall behind.

Put all Dark Elixir you can into Archer Queen and Barbarian King until maxed at your own pace.

Put all excess resources into walls.

Tier 2Build Grand Warden Altar.
Laboratory to level 9.
Army Camps to level 9.
Build Grand Warden Altar.
Laboratory to level 9.
Army Camps to level 9.
Tier 3Gold Storages to level 12.
Clan Castle to level 7.
Grand Warden to level 5.
Build all new traps, defenses and walls.
Get them on par with Town Hall 10.
Eagle Artillery to level 2.
Inferno Towers to level 5.
X-Bows to level 5.
Tier 4Build all new traps, defenses and walls, except Eagle Artillery. Get them on par with Town Hall 10.
Elixir Storages to level 12.
Gold Storages to level 12.
Clan Castle to level 7.
Tier 5Air Defenses to level 9.
Air Sweepers to level 7.
Hidden Teslas to level 9.
Giant Bombs to level 5.
Grand Warden to level 10, minimum.
Archer Queen to level 45, minimum.
Barbarian King to level 45, minimum.
Build the Eagle Artillery.
Elixir Storages to level 12.
Air Defenses to level 9.
Air Sweepers to level 7.
Hidden Teslas to level 9.
Wizard Towers to level 10.
Tier 6Archer Towers to level 15.
Cannons to level 15.
Archer Towers to level 15.
Giant Bombs to level 5.
Cannons to level 15.
Bomb Towers to level 6.
Mortars to level 10.
Tier 7X-Bows to level to level 5.
Wizard Towers to level 10.
Town Hall to level 12.
Tier 8Bomb Towers to level 6.
Mortars to level 10.
Inferno Towers to level 5.
Eagle Artillery to level 2.
Tier 9Max heroes if not maxed.
Town Hall to level 12.