Align image on tumblr page & add link

This is what a business in Australia was looking for in their web design

I have a tumblr page that I have designed myself. It is completely blank with only one jpg on it.

I need that jpg centre aligned, and connected to an email address so that when you click on the jpg, it opens the email client.

The web page is a holding page for a future website.

I am also open to using a different host if it is easier to do so. Read more