How Do You Make An Ender Portal
Camila Farah

Select the end portal frame icon the blue and white box on the right side of the menu and press y xbox or playstation then scroll down and repeat with the eye shaped eye of ender icon.
There should already be 1 or 2 of the eyes of ender placed for you so you only need to add the other 10 11 eyes of ender to complete the end portal. In order to activate the end portal frames must be oriented correctly. In creative mode the player can construct an end portal by placing 12 end portal blocks in a ring enclosing an open 3x3 square and placing an eye of ender in each one. Complete the end portal by adding the eye of ender.
Once you place the eyes of ender the portal will activate. You should see both items in your inventory bar at the bottom of the screen.
Source : pinterest.com