Hey, I downloaded this theme called Myst. Everything is ok with the theme but the theme just shows my blog name. Instead of showing my blog name I would like it to show a custom header image. I have seen other sites do this with the exact same theme and they have a header. How can I do this? Please give me a step by step guide ( I am fairly new to wordpress). Thanks in advance.
P.S: The theme comes with no Header option under the appearance menu.
[closed as duplicate - continue with http://wordpress.org/support/topic/how-to-add-header-image-2?replies=4 ]