Did you say shrubberies?
I used a Rust-Oleum Enamel White Paint and rolled on 3 coats, sanding between each coat. I then brushed on over time, about 4 coats of Minwax Gloss Polycrylic over the paint, after waiting for the paint to cure for a couple of weeks. I then sanded the polycrylic smooth to achieve a pretty nice finish that I am quite happy with. The Enamel White color is undoubtedly NOT the "correct" Gold Crown 1 color, but it's close enough for me.
If I had had more time, (I wanted to get this in my house before the weather turned cold) I could have done an even smoother, Glass-Like finish...however, this can be done in the future, when the weather turns warmer again, if I so desire.
If I may ask, what was your sanding method? With what did you start and finish? 2K, or higher?