Website Upload Photo progressing

I need to improve website's coding and website's UI; so that my website will NOT out of date.  From normal coding, until JQuery, until booststrap;   I need to keep on improve it. 

Example, upload photo progress update. 

At first, the UI as below diagram.  Very old fashion design. 

Then I improve it to this (below diagram).

Found out some issue on the second upload photo design.  Every time I need to upload all the photo again.  OR I can't just upload the specify number of photo which I want.  Example, In order to change third photo, then I need to upload all THREE photo again. 

In order to solve that, then I come out this. 

So that I can delete OR change which specify number of  photo I want.