When duplicating the video, the second video moves sideways few inches

Hi guys, 

I am new to using Premiere Pro and definetly need some help already. 

I am trying to duplicate the same video few times to create a loop but, when trying to duplicate the video, the second one moves sideways. I have seen a similar question posted here, yet I could not find the answer to this. 

A detailed answer on how to do this would be very appreciated. 

Thanks a lot 

Gabriela