Are you talking about for letterforms? If so I would suggest researching and finding some "alphabets" used by
sign painters. Learning a few basic styles and committing them their shapes and attributes to memory will serve you much better in the long run and help with learning design principles for other elements in your carvings. For a good example of what I am referring to, you can do a search for "speedball textbook". I would recommend staying away from the trendy hand drawn characters that are so popular as they tend to generally be misshapen and poorly designed.
