I was rebinding my chronicles of Narnia book and needed a leather press for the top and bottom sides of the cover.

you will probably want to print the model letters down, and with support. (normal support works best) you can print it with 15% infill but depending on how much pressure you are putting on it you might want to use 100%. or add some wall loops

if you want the side parts you can download that here https://www.printables.com/model/1263046-sword-leather-press

and this is the lion head https://www.printables.com/model/1263036-lion-leather-press

if you are looking for other leather stamps check out my page were I have a bunch uploaded.