I am trying to change the header size on my wordpress page: http://theculinarycat.wordpress.com/
The theme I am using is Fruit shake: http://theme.wordpress.com/themes/fruit-shake/
That banana photo I am replacing, and I would like to half the size of the header. (Preferably including instructions how to change the size, not just the number, as I might play around with the size later on).
I had a look at the code and searched around online but couldn't work out how to do it.
^ There's the code. I don't even know where to begin.
Thank you :)
The blog I need help with is theculinarycat.wordpress.com.