MarketPress: make "checkout" or "shopping cart" button/link appear after

I'm trying to put finishing touches to a MarketPress powered site and would like to have a "checkout" or "shopping cart" button automatically appear beside/beneath/above the "add to cart" button after someone clicks it.

As it is now, with the way the site is designed (no sidebars) people will be forced to scroll up to the header where the "shopping cart" link (soon to be joined by an icon) sits.

While this is passable when viewing on a desktop browser, on a mobile browser the experience isn't so great because even though "product added" appears after clicking on the "add to cart" button, you don't really know where to look or what to do next.

Please let me know if there's something that I need to add to the shortcode to trigger this or if there's another/better way.

Many thanks