Getting those lines straight
Here you can see my guide sheet illuminated by my light pad. I create a custom guide sheet for every envelope based on the script I will be using the letter the envelopes.
When I am lettering opaque or heavily lined envelopes, I cannot use my light pad so I have to lightly mark the guide lines in pencil on each envelope, letter the address, and then when the envelope is completed, dried, and proofed, I must go back and erase the light pencil lines.
And sometimes I have to use chalk lines when the light pencil lines don't show up!
Choosing the right method and the right tools is all in a days work!