Button, button, who's got the button

I made this 1910 pattern for buttons in size 10 cotton thread and my trusty size 7 steel hook. I planned to make more than one because they're small and they looked easy. I only made one.
The pattern needs to be adjusted for US standard so all dc stitches are single crochets and I used a half double crochet stitch for the short treble. The roll stitch aka the bullion stitch is described well even if it was the stitch that made me give up after the first button. I tried it with fewer yarn/thread overs and I just couldn't pull it off (or through) consistently with thread. I think their suggested thread is smaller and silkier than the thread I used. I'm not sure if that would make it easier or harder.
I also had trouble following the repeats and it doesn't look quite right in my first attempt. To be fair, the ones they have in the photo don't look like they have a consistent picot pattern either.

My finished button is about 1.75 inches across. It's pretty soft so I don't think it could be substituted for an actual button. It seems more decorative.

Here's the rating:
Is the pattern easy to understand? Mostly. The repeats could be better written.0.75 
Does it look like the photo? Yes 1.0
Would someone use this? Maybe? 0.5
Did I enjoy making it? Eh... Not super fond of the bullion stitch with thread. I could have tried this with a heavier yarn and made a coaster. 0.5

Total 2.75

Next week it's spiders!