Tile the less visible wall first placing whole tiles flush with the corner.
How to tile a outside corner no tile other wall.
Press the tile against the wall with the cut side facing the corner and the other edge next to the last full tile in the course.
This do it yourself video shows how to tile outside corner without bullnose.
Space the two tiles consistent with the rest of the tiles generally 1 8 inch which will leave a 1 4 inch space at the corner.
You can use the trim.
They typically have a gently rounded edge and are used to create a transition between the tile and the wall.
Bullnose tiles have finished edges and are meant to be installed with wall tile.
Then tile the other wall overlapping these tiles to conceal the edges of those on the first wall.
You can also miter the edges of any edge tiles with a tile saw to create a slanted effect.
Spread the mortar on the tiles that will be placed on the outside corner and gently press them in place so they overlap the first set of tiles and their edge is flush with the surface of the previously installed tiles.
As you can see in the image you should place spacers along the inside corner and between the tiles.
If you have natural stone or porcelain tiles consider grinding the edges into bullnoses to save you buying trims.
Cut the final piece of tile on a wet saw to fit the wall so that its edge is flush with the corner.
The outside corner is part of bathroom shower corner that need to be tiled.
Apply mortar to the back of the tile with the notched trowel.
Install the tiles on the more visible wall.
After you have finished installing tiles on one side of the internal corner you should continue by laying tiles on the other side.
All you have to do is to start installing wall tile on one side of the corner.
Lay out the tiles along the first wall that comes up to the corner.
Spread the adhesive on the wall with a notched float and make sure the tiles are plumb use a spirit level to be sure.
Coloured plastic or chrome corner trims will protect tiles on external corners from damage and give the edge a neat finish.
Therefore you should spread tile adhesive on the wall with a notched trowel and install the tiles.
Allow all the tiles to dry for 48 hours.