This second pair of shoes are either leather or man made leather. You can use the same technique. Install the grommets and use awesome long shoe laces. Like I have said it is a little more difficult with the leather shoes, but where there is a will, there is a way. As for making shoes bigger. The shoes I used were sandals, they were a slide on style. I cut the top down the middle added grommets and laced them up. I was able to add at least a half a size by doing that and again they looked so cute.