Use any of the techniques described in my lessons to get the desired image on the drawing page. Be sure the image is selected. You'll get an empty library palette floating over your drawing page. Click on the Add button at the bottom of the palette to bring the selected image into the palette. The dog image is added to the Library.
Images retain their original size, but appear smaller here.
Click on the triangle at the bottom of the palette to expand it. You can now give your image a meaningful name. Enter your name and click rename. Alphabetize your palette images by name. Be sure to Save your Library.