According to Vastu Shashtra the clock wise stair case is most suitable for a house/flat and etc. Clock wise means North to East, East to South, South to West and West to North directions. Your stair case is North to West. It means Anti clock wise stair case. it is harmful for house owner. For remove Vashtu Dhosha you should follow bellow given some following points.
1. You should keep soil pot with rain water under the stair case ( If it is at ground flower ).
2. A pot which is full fill seven type of good grain other pot of water should be keep on the roof.
3. A pot which money plant should be keep at the corner of stair case.