Retail concept visual

I need help over the next week as i have had an accident and my right hand is in a cast!!! i cant sketch or hold a mouse for long argghh!

Sympathy party over...... I am helping a local charity for the homeless create a retail concept for their new shop. The charity shops' in our area are dismal and i want to give them something to create some buzz.
I will do some very basic sketches of the layout and my initial visions to give you an idea , then i just need it illustrating up to presentation level.