I could be doing this on photoshop but i prefer doing it by hand and i prefer how it looks when you do it by hand.
What works so well is each letter is so unique yet has such an obvious theme and belong together.
I found this process most successful.
Taking a photo of a design i like,
print it out,
write the alphabet on the photo in pen,
cut out the letters,
and put it in the scanner.
I should really do my own design.