not sure if this is going to help, but polka dots often reminds me of japanese designers,
tsumori chisato, mint designs, frapois, comme des garcons and such.
i think any look book of them especially the spring summer ones, should be of help to you, of how to wear it.
how about pairing big polka dots top with small polka dots bottoms?
in black and white or colours, think both would make an impact equally.
polka dots also goes well with layering imo.