Set a content type's teaser image (right outlined)
What you will want to do is go to your views admin page for that view.

If the view is built using fields simply click on that field and select:


Style Settings
Check the box titled "customize field HTML"
You can modify the view to display it as a div or leave it as is
Check the box titled "create a css class"
Type in a css class
Click apply. And save the view.


Now you can go to your theme .css file and create a new css rule to position the image. And should apply for all future views with that css class for that field. 

Let me know if you need further help.