Then do the same with all the tiles in this row.

Take one and tiles, align it and press with effort to the wall. Then do the same with all the tiles in this row. Pay special attention to how tiles to lie down: there should not be distortions and deflection. From time to time, check for even rows using the level. By laying tiles, do not forget about the cross that must be placed between the tiles. In the event that you put the tiles incorrectly, then carefully move it to where you need.