Developed 3D model with stairs

Sketches that I chose for making model

View of 3D model

Side view of model

View of the back of model

Front  view of model

Side view of the first staircase that I made

 Other side view of the first staircase

Side view of the second staircase

 Side view of the third staircase

View of both three staircase

 Developed Stair