do i have to reference my own images
The suggested elements for a reference are: Artist/Photographer’s name (if known), Year of production. Title of image. [type of medium] Collection Details as available (Collection, Document number, Geographical Town/Place: Name of Library/Archive/Repository).
I suggest you reference it as above with your name and year taken. Give it a title and reference it as a photograph from your own private collection.
Reference (No Author)
Title of work [Type of work]. (Year image was created).
Retrieved from URL (address of web site)
If you do not know the source of an image you have found, in Google Images you can upload an image- look for the camera icon in the search box.