aqua and ruffles

I love this dress! I bought it at forever 21 on a whim a few years ago with my best friend! I love to layer it with anything. Then, there is this aqua cardigan, another staple. I wish I could venture out of my comfort zone of cardigans. I bought a black blazer thrifting a few weeks back and I can't for the life of me decide how to style it and make it look good...

Dress: Forever 21
cardigan: Target
Belt: ??
zebra shoes: Target