Hello,
All shapes are wrapped by a paragraph tag that adds default Word spacing (you can set a custom spacing using a template). We recommend you to check the sample available on:
http://www.phpdocx.com/api-documentation/word-content/add-shape-Word-document-with-PHP
That adds a shape with its position changed using the option marginTop. You can use this option to accomplish what you need.
About from option, it sets the x and y coordinates. You can also use the width option to set the size of the shape.
Regards.