Canon India — Canon printer pixma G2010 series

I have connected my computer (Windows pc) to the printer and have downloaded the application also, after doing what the manual says, to print 6 pictures at once, i went on the image garden and selected the pictures, but i was not able to fit the pictures within the box, the image in the display as shown was getting cut from the ends, i tried to adjust it within the box's limit, but it just went from one side to the other, which resulted in the cutting of the edges. So how do i fix this problem?
The image size also is small and medium downloaded from google?
How do i go about the printing then?