3DTV with signer

We have been informed by our tutor that our programmes that are going on our TV station will be played twice. Once as an ordinary TV station and then again with a signer for the hard of hearing. For this i will have to add a signer in the corner of the video.
To do this i added another layer on top of my previous 3D video studio production. I then scaled down the video a little to give the signer their own room in the corner. The signer was keyed out using the chromakey tool and blended a little to stop the pixelated edges from shaking about too much. This time i used a backlight when filming my signer. This made them easier to key out and gave a more proffesional finish. However, my signer was nervous as she is only a fellow colleague and kept swivelling round on the chair when she should have kept still. To prevent this happening in the future i will use non-swivel chairs.
Another problem i came across was that my signer started signing before the presenter started talking and that if i moved the track in premier the signer would just pop out of nowhere suddenly. To amend this i used the additive dissolve to gradually blend the signer into the video as the presentr starts to talk. I also used a cross dissolve to gradually fade out the signer once they had finished signing.

On my second attempt i did everything the same as the first time but i used a different signer. However this signer was a little too enthusiastic and their arms kept going out of frame when i was filming. To prevent this from happening again i will stand further back with the camera even if it means i have to garbage matt the equipment.