How To Write Letters On Isometric Paper . Learn how to draw letters using an isometric grid! Write your name, address and contact information at the top of the page, typically aligned on the left or right side. Bright squares alphabets stock vector. Illustration of grid 44970178 from www.dreamstime.com Now draw a set of vertical lines through each intersection until you end up with the pattern shown above. If you are writing a business letter, use the company name and address instead, or just write on company letterhead. Once you have your grid drawn in lines, select everything and convert all the lines to guides (ctrl/cmd+5) to create your finished grid.