I'm not sure there is a GUARANTEED way to get a picture on google images unless you pay for advertising or something.
There IS a way to to get your image on Google, just post a pic somewhere and under your pic where it's posted put the words "Google, [insert whatever is it your looking for]"
Like for me, Google, "Dr. Cable Uglies". I'm in the first line of images twice. Once from being on Scott's blog and another from me posting a pic here.