Thank you so much Nadine. As I mentioned in the previous comment, the purple and green roses were done before for this kind of emergencies but the pink one on the cupcake ( imbedded in the comments) was done on the go. The drying time also varies on the weather and how thin the petals are.
This is a tutorial I had posted on Cake Central last year which is what I use to make my roses : How to make Roses Using Round Cutters
The link to my tutorials are also on my Blog : Tutorials
Hopefully the links will be helpful Nadine :-)
Sasi, Sydney Australia, http://cakesbyssn.blogspot.com.au/, https://www.facebook.com/CakesbySasi
