Also started in January 2014 (Portal: Chell - Jumpsuit & Long Fall Boots), but I had ideas for it for a ridiculously long time. And my research goes back over a year. It's far from perfect and I have several ideas of how I would change and improve it. The first version was completed in March 2014 and the electronics were redone for June 2014. I will include details on both versions and the reasons why they were changed.
I collected several images to use as a guide, these were the best ones I found: