Elastic strapped ballet flats

I need to wear an insert inside my shoes, and found the lack of a strap across the instep in ballet flats made them unwearable.
Then I saw some RTW ones with an elastic strap across, and decided today to do something similar to mine to make them more wearable.

Here they are with beige elastic added to the shoe. I must admit it was quite fiddly to stitch on and doesn't look great if you look too closely, but with some brute force and a zipper foot I now have 3 wearable pairs of shoes which is fabulous.
I may also dye some plain white cotton socks with Dylon's Pebble Beige to wear with them, as this works quite well as a 'close to nude' colour for me.

I have two black pairs and a red pair which will get black elastic and be worn with black socks, but not today as i have some other projects to complete first.
These look quite good with pants which come down over the foot which is how I plan to wear them.
The animal print ones in particularly look good with my tan wool pants, and since both of these have previously been hard to style this is great!