the tiny spoons would just make more delicate projects! I've actually been looking for some tiny spoons; it's so humid here, you can't use a salt shaker, so I use tiny salt bowls for entertaining, and need teensy spoons for them.
I'd probably use foamcore. If your foamcore is big enough, cut each layer in a single piece; that will make it very strong. If you're limited, cut the pieces with at least a 2" overlap. Use white or tacky glue to hold them together, and tape on the back so they don't shift.
If you start with black foamcore, you won't have to paint those pieces. Looks like gold paint, then glitter for the others.
The bling on the borders look like some kind of glitter tape. The bling on the center panel might be a narrow width of glitter tape.
That's just all my opinion. Use what you have or can find easily!
I like the tiered stands made with brass candlesticks. If you find a tiered stand with the loop on top, you can unscrew the whole thing and use different plates--larger, smaller, different colors, seasonal...plastic is easy to drill, but reinforce front and back with masking tape before drilling to reduce cracking.