Hello,
The method addImage allows to use the float and textWrap options to adjust the images. But due to its complexity to adjust images exactly, the easiest approach is to create a DOCX template and use replacePlaceholderImage to replace images and DOCXPath to remove or clone them if needed:
http://www.phpdocx.com/api-documentation/templates/replace-placeholder-image-Word-document
http://www.phpdocx.com/documentation/introduction/docxpath
Regards.