Select your logo file from the dialog that displays to place it into the canvas window. Click the "Resize" button in the Image group to activate the Resize and Skew dialog box.

Drag one of the handles on the logo's side or the handle in the middle of the logo, and pull it away from the logo to resize the image to your liking, if desired. Click "OK" when you are done ...

Make sure to create your logo as vector-based artwork so that you can resize your logo without compromising its quality. Consider all the different media that your logo will be printed on.

All you have to do is click on your desktop to make sure it's in focus, then hold down control and scroll up or down to resize. In the image above the middle icon was the default size, the left ...

Step 3: Move, reorder, and resize the image. Click Preview Stream to see what your stream currently looks like. You should see your image, as well as other sources that have been added to your stream.