Final 50+ Joiner photograph

For my final picture i will be using over 50 photographs combined to create a joiner photo.
I am going to use the atrium as my landscape with the trees included, i will also be including my feet in to the photo.
When taking the photo i will need to keep the photos on a small format. This makes sure the finished photo is not too large a file and it will be quicker to upload and manage.
When i went out to take the photos i ended up taking a lot more than i expected. When i got back and tried to upload them all into a joiner photo but there were too many photos and the computer could not do it.
I am going to have to go back down and re-take the photos, making sure that this time i take less.