Earl grey panna cotta

I wanted to make some earl grey and rosewater panna cotta, and then garnish it with blueberries, blackberries and some sort of green leafy thing - I was thinking shiso rather than mint. But I didn't want to spend money or time buying rosewater and shiso, so I used what I had instead - which was dried rose petals from a shopping spree ages back, to give the rose aroma without needing rosewater. I can't figure out how to homogenise the panna cotta yet though, I always get the separation....