and how do I do the whoosh thing please?

Script MT  Vorgeschlagen von pilaster 

Either draw it or poach one from another font (Metroscript, Saloon Keeper, LHF Ballpark Script to name a few)
Or if its for personal work only,
http://www.dafont.com/brannboll.font

To purchase a commercial license, visit:
http://www.aringtypeface.com/brannboll

Thanks very much

No worries