I am no expert at this whole chalkboard lettering thing... so I came up with an easy way that anyone (even if you have the worst handwriting in the world) can create perfect letting on their chalkboards! Just type up the wording and font that you want, in a word document
After you print them out, rub over the back of the wording with white chalk
Lay out the words on the chalkboard as desired. Then, with the end of a paintbrush or pen, rub over the lettering so that the chalk transfers.
After that is done, go over the lettering and fill any spaces missed with chalk
Now... get to chalking ;)