Every now and again we would need to remove an entire tile decal and start over. Simply because we either didn’t have it quite lined up just right and the existing tile was showing, or there was an air bubble we couldn’t smooth out.
To do this we peeled up one corner and pulled the decal up (which is actually harder than you think it’d be!) These are removable but definitely stick well, and leave behind no sticky residue.
Once the decal has been removed, place a backing piece onto the sticky surface, line it up for a dry fit and try again.
(I think we only re-positioned 2 tiles out of the whole tile floor makeover! If you take your time you will have great results!)