The End Portal frames must face the center. You need to place an Eye of Ender into each block. The portal must be exactly 3X3 blocks large, meaning you need 12 End Portal Frame blocks. Once you have created the frame, your next step is to complete the End Portal. Add the Eye of Ender to finish the End Portal.
The first thing you need to do is create the frame for the End Portal from 12 end portal frames.
