Create instagram reel under 15 second edit

Hello!

I did a fashion photo shoot.

I am looking for someone who can merge a short 5 second backstage video (taken on phone) with 3 or 4 images of the final result, turning it into a 10-15 second video. I want there to be a nice transition between everything. Should be a very, very simple job for those who know how.

Has to be formatted and exported with the best quality in mind for Instagram reels.