DITA supports left, right, or center (center by default) alignment of images with the “align” and “placement” attributes. For example:
<image href="GUID-AF09C049-7EC0-4610-801D-697D2235554B" id="IMAGE_C44F04BBF18D42CCA4555F56F1069EEC" align="left" placement="break"></image>
However, Collective Spaces does not align images based on those DITA attributes. The output format does display the alignment correctly.