Creates a video light animation from a film photography

Hello everybody !

I am a film photographer and new to Premiere-pro.

I made a series of photographs of the sun in black and white with a sensitivity of 50 ISO.

I scanned the negatives by deliberately keeping the dust present on them.

Which gives the result of a galaxy photograph. (see screenshot : the first one is the natural without pushing, the second is when i pushed the curves) 

My wish is: from these photographs, I would like to modify the curves of these in order to push the photographic grain, or reduce it to only represent the sun, and to make a video of it.

I tried taking video screenshots, of me editing the scales live on lightroom, once the recording is done I switch it to Premiere. Which is extremely long, and complicated to make the connections with the music.

Is there a way to do it directly on Premiere, create a sequence where in a graduated way, I go from a dark photo to a very light one with a lot of grain?  Just want to show the path graphically in video between the first screenshot and the last (which I recall is exactly the same original photograph)

Please, Help me is for an exam which is coming very soon !

Thank you in advance for your help and answers

Zach