Character Animator New added Scene mixed with current one ?

Hello guys you good ? I just finished my animation project but there's a scene I forgot to put at the first so I added the scene and taped it but I after I'd taped it ; it mixed up with the current scene which is after it and I don't know how to like push the scene ( which is after it ) away little so they don't get mixed you know what I mean ?

Example : you taped number 2 and 3 and you forgot to tape number 1

                  so you taped number 1 and put it behind number 2 &

                  suddenly number 1 got mixed with number 2

                  and you need to push number 2 away from number 1

                  so they don't get mixed

Got something ? hope you did please help me I'll lose lots of marks if  I didn't adjust that .

Thank You