Positioning and scaling blueprints background images

Hi I am preparing a series of tutorials to create drawings of boats and generate CAD drawings with Blender, this is the first step, place and scale background images. There are some errors due to haste, then for the voice I used Fiesta TTS and the translator, I apologize for the errors and hope to improve in the next video. To assemble these few minutes it took 2 days of work, all done with free software.