It’s hard to cut curves with a seal carving knife.
Most soft stone, like that used for seal carving, can be bruised.
Someone recently sent pictures of a carving of stampeding horses asking if the stone was shoushan.
The Japanese sometimes cut seal designs into the end of a hard white eraser and use this as a stamp.
It is tradition that Chinese calligraphy be done all at once, with no corrections or reworking of the characters.
People often assume it’s easier to cut a seal with fewer characters rather than one with more characters.
If someone says they carve seals, look at their hands.
Are you right or left handed? It wouldn’t have mattered in old China.
Most carvers will sign their name on the side of a finished seal. Depending on the color of the stone you may want to fill in these lines with paint.
Try using some red and white paint—gouache works well for this as it dries quickly and is water soluble—to experiment with seal modifications.
Store your seal ink in a non-porous container.
Seal ink can be purchased in several formats.