I just played with hearts today. There was a strip of a page about 2.5" in one of watercolor journals so I filled it up....
And then I took a picture and cropped it so you wouldn't see the page underneath.
And while I had it in ArtRage I covered up some of that white on the hearts because it was too white! That's the problem with Sakura's White glaze pen,,, it goes on clear then gets whiter and whiter as it dries... Love that, but it is a surprise sometimes!