I
CAN make a pouch with a zipper.

It took me awhile, and amazingly enough, not too much swearing, but it's finished.
I'm not 100% happy with it, but as a first it's ok.
I ordered some zips from Zipit on Etsy but they haven't arrived yet so I searched through my stuff to see if I had a zip. I found one that I've had for years.

It was brown! Rather ironic with all the "no to brown" stuff happening with the Mouthy Stitches Swap.
So another ferret around in my stash to find some co-ordinating fabric that I could live with. I must say, I was tempted to make a really brown pouch and post it on Flickr as my pouch ready to go to my partner. I decided I should be nice, not naughty.

I found a solid to make the tabs at the end of the zips and an internal pocket. It was a waste of time making the tabs, as it turned out the zip was too long for the purse and so the tabs disappeared. Below, this is all that's left of one end.

I referred to Ayumi's tutorial to make a pocket for inside the pouch but I didn't use her tutorial for the actual pouch. The pocket worked well.
I'm going to try a different tutorial next time. I'm not going to tell you whose I did use this time.
Next time I'll be using either a shorter zip or making the pouch larger. The zip to pouch ratio was all wrong.
There was too much interfacing on this pouch too, so next time I'm going to only use one piece of interfacing on each side, not two on each side. It's made it really bulky at the seams, even though I've trimmed it.
If anyone from Mouthy Stitches is reading this and is very worried that I'll be making their zippered pouch, I'm going to make a few more before I work on
THE one.
You can breathe a sigh of relief. I promise it won't be brown.