Skip, Left-click on the thumbnail you want.
Left-click on "original" size to get the greatest resolution. If greyed out it is in the original size.
Right-click within the image and "Save Picture As" (or such) and upload the full image to your file.
I do not know how these files will project as I am not a fan of doing that.
I have seen some poor washed out pixilated results if projected on a screen rather than on a digital monitor.