Door and Window

 The next task is to make door and window, which is not easy.

Draw a plane first, convert it to editable poly, select two edges, and connect two lines.

Give this plane shell 20mm, select the face, insert 60mm, and extrude 20mm.

Then draw two rectangulars, then use Bevel Profile. Then I got a Plaster pattern.

Then use symmetry to make the two sides of the door the same. Samilar steps for the window.