So this is what I came up with. The heart is blocked in sinamy, padded and then covered in a cotton fabric then each swarovski rhinestone was individually glued into position. I've never used hot-fix before and I was super happy with the results. I also attached red shaped turkey feathers and its all sewn to a plain black headband.
The great thing about this headpiece is that it quite subtle in natural light but once under the disco lighting it will shimmer and shine!