I've been working on a gallery wall for my front entry way. I thought I would some personalized typography would be the perfect thing to break up all the frames. I had two pieces of scrap wood. (Actually 2 blocks of wood from some "never got made" pinewood derby kits.)
[1]
You could also leave it plain wood tone, but I used some clearance stain so that it would somewhat match the dark wood in my home.
[2] Using Microsoft Word {or something like it} choose your font, change your desired letter into the dimensions of the wood piece, & print it out.
[4] Tape the printed letter over the painter's tape.

cutting through the paper and tape.
[6] Peel off tape around your letter and paint 2-3 coats of paint, peel of letter shaped tape when final coat of paint is still wet.
[7] Apply clear coat.
[8] You can attach picture hanging hardware- or like in my case, just drill a hole with your Dremel for the nails to fit into.