They look kind of like skates, which would be hard to walk in...I'd say, find a cheap pair of shoes/boots that you can recover/make boot covers for (awesome tutorial here: http://ze-temptress.livejournal.com/1308.html)
. They match the jacket, so you can use fabric from the jacket to make them if you have some. For the skates...you could try making something out of wood and screwing it to the bottom of the shoe, but I'm not sure how that could be done safely. :/ But there's a neat tut on how to make regular platforms here: http://anniespandex.com/diy/how-to-make-platform-shoes/
. Hope it helps!