I want to make a birthday cake for my daughter that looks like snow. I am exploring options. One is pressing sanding sugar onto white icing of some kind to resemble sparkly snow. Should I use buttercream? I also want my buttercream true white, but butter will give a slight yellow shade, right? What about cream cheese frosting? Will sanding sugar melt into meringue frosting or plain whipped cream? The final piece of this is we live in a boiling hot climate, so the cake should be stable for about an hour while the party goes on. Thoughts? Thank you!