For the smaller lettering, a 30- or 45-degree bit might help you get cleaner, deep letters. And of course, the size of the very tip of the bit also determines the smallest feature size. When the letters look rough, it might also be a dull bit. Sharp bits cut better, but wood is a stringy stuff, so some little bit on the top of a v-carving is pretty normal to some extent. A light sanding is usually easier than a third, or fourth pass to clean up the last little bits.
One thing I'm curious about are the indentations at the inflection points along the longer curves, like at the top of the cat. This is usually the result of out-of-order vectors in a very small space. If you're using the Vectric software, you can use node-editing mode and then zoom way in, and you'll see paths like this:
That can be a pain to find and fix if there are a lot of them. OTOH, it could be an intentional part of the design
.
Regards,
Thom
Thom,