If we give different image other than test.jpg, the flares are not drawn properly

In the addFlare function, we are always taking test.jpg as input even though we pass differnt image/images as input.
As a result of that flares are always added with respective that on the image passed.
This would lead to wrong plotting of flares on images.

Locate the addFlare function and trace how the supplied image or images are passed into it. Confirm where test.jpg is used, then verify that flares are calculated and plotted from each provided image rather than that fixed file; done means different input images receive correctly positioned flares.

Written by the indexing model from the issue text.