Here is a scale drawing of a window frame that uses a scale of 1 cm to 6 inches.
Create another scale drawing of the window frame that uses a scale of 1 cm to 12 inches.
Draw your image on paper, take a picture, and upload it using the image upload icon
If you do not have the ability to upload an image of your work type "Image is on paper."
copied for free from openupresources.org