Some handy scaled grid paper for sketching your layout ideas. 

Each large square is equivalent to 1 metre by 1 metre (and subsequently the small squares are equivalent to 50cm x 50cm). More mathematics - you can double your scale and make two large squares which are the equivalent to 1 metre.

Just enter you email below and we'll hook you up with a clean copy of this handy grid paper PDF so you can print it off and start your creative ideas flowing like a pro (image below for reference of what you'll get).