Here is a simple alphabet for making appliqué pieces. You can simply cut out the letters you need, trace them on your fabric before cutting. Be careful, if you trace on the right side of your fabric make sure you choose a marker that disappears. If you're tracing on the reverse, be sure to turn your paper template over too, so your letter is legible.
An alphabet traced by hand.
Or a cleaner alphabet with an existing font.
And if one day you need an even bigger alphabet, choose a simple font in word or any other software you use, write your word and choose the size of your font. Print it out and that's it.