This font is a homage to the classic LEGO look. It is built on a pixel grid. The best look is achieved when one pixel is represented by a 2x2 brick, but a pixel can also be a stud or a 1x1 brick. You might even want to go crazy and let a pixel be a 1x4 brick for that extra wide look.
All letters are six pixels high. Most of them are four pixels wide, but a few - M, W, I and Q - break this rule.
When a pixel is a 2x2 brick it is mostly suitable for larger creations, like sculptures. Studs up is suitable for mosaics, and when it is shrunk to 1x1 plates or 1x1 bricks it could be used as signs in a minifig-scale creation.