leather bottoms for felted clogs

[KnittedRose]

I made my DD a pair of felted clogs for her B-day, I wnat to put a leather sole on them. I know that Fiber Trends makes some that come up over the edge of the slipper a bit, but my LYS told me that some have complained that they make a wrinkle in the middle of the sole once they are sewn on. I don't know what other options are out there. I want the entire bottom of the clog covered so she cam wear them in her drive way, on the porch etc. I've had good results for indoor use by painting several coats of the white coating that goes on the back of latch hook rugs. I was thinking that if I did that first, then sewed the leather sole on, it might not pucker. Any thoughts on this?
Thanks for the input.
KR

[Mirl56]

My sewing background tells me there is a wrinkle because the 2 pieces aren't the same size; the clog would be bigger then the leather sole, that's why it wrinkled when the 2 were sewn together. Seems the wrinkle is more a result of not sewing them together in such a way as to keep the clog bottom smooth and flat when attaching the sole.