You can make your worksheets more attractive by adding images. Remember that you can only upload images that are royalty free or that you have created yourself.
First draw the box where the image will go. Once you have it, you can upload the image from the sidebar and it will appear in the worksheet.
Once the image is uploaded, you can move or resize it. If you want the image to maintain the original aspect ratio when resizing, just press the Ctrl key (or Cmd on Mac) while dragging the borders.
When adding an image, we can upload the file from our computer in JPG format, in PNG format or in GIF format (in this last case it can be an animated GIF). We can also input the URL of the image and it will be downloaded and added to the worksheet or we can upload an image we have in our Google Drive.