They are nice. I like the colour.
Ideally, toenails should be straight across, but you know that.
What method did you use? Shellac? It helps to know that. I use a glitter line called Reflections I think. I'd check but I'm at home and they're at the salon. I can buy huuuge amounts for a small price. I know lots of gals use the Martha Stewart glitter.
The only thing I can advise is to make sure there is enough glitter, like you said, and also watch the jagged free edge. I always pat my glitter before top coat so it's not all sharp.