Normally the image will be resized automatically. (Base on the screen size). However if you decide to change the size of the image to a smaller size comparing to the Parent Block, you can justify the position of the image with the self align tool in ...
There are two ways you can turn a square image into a circle shape: Using Image Style Presets Click on your image > Style > Style Presets (you may have to turn on Expert build mode). Then, click on Circle shape. Using Border Radius config Go to Style ...