1. Slab is cleared off from loose mortar deposited during plaster work and level the surface. 2. Chalk out the marking on wall @ 0.6 m above the slab surface in one level. 3. Construct mortar dots at four corners of wall to required thickness of bedding for tiles (15 X 15 cm or as per tile size) 4. Place the tile at remote corner i.e. at highest position of tile required and check the vertical distance from reference line as required for maintaining required level / slope towards door, by adjusting mortar bedding thickness, check level of tile top with spirit level. 5. Place another tile at opposite corner and follow same procedure as per point no 4 and similarly for all corners. 6. Check diagonal level of tying the by string from corner tile and central tile for reference is fixed. 7. Lay mortar bedding strip between two remote corner and lay the tile in line and level. 8. Repeat point no 7 procedure up to door corner.