After sleepers are installed and any additional blocking for deck posts, edge trims is complete then you can install the edge trim (wood or composite) around the perimeter of the deck, (you don’t need to install edge trim along the house edge unless you want it for the look, or it allows you to not have to make a narrow-cut tile?
Now you can lay the tile according to your tile layout plan, apply a 3/8” bead of adhesive in a straight line along each side of the sleeper where the tile is going to be set and then set tile in place, adjust position as necessary? Once you have a full line of tile set then use a long level or straightedge to check the straightness of the tile line. There may be a few tiles that are slightly larger or smaller than the others and will need to be centered between the two surrounding rows of tile. If you have a tile or part of a tile that sets lower than the rest, then you might need to lift it back up and shim the low spot and then add more adhesive and reset it.