Modify Joomla! template

I need to modify a Joomla 2.5 template. The template needs a new font and needs a custom module to show productpictures inside a Polaroidframe. The module must show modulename at bottom of the Polaroidframe. It must be easy to change the picture inside the frame and it must be possible to adjust the size from the modules parameter. The module must be as other modules - made to install using administrator\extensions.