After I tested gloss and white on the test tiles, I thought I’d try one more glaze. I bought some satin glaze and gave it a go. These are the results of both 

Satin Glaze

Gloss Glaze

 

I think the satin is nice and creamy has a slightly matt finish and gives the yellow a paler appearance. 

The gloss gives the yellow a much brighter appearance – much more vibrant. The shine appears sharp and defined. 

Now I have a decision to make…