The trick to carving a pattern like this onto a pot is to carve every single line with only one pass of the carving tool. If you allow yourself to belabor over the lines, going over them again and again, it takes way too long and your brain will get very bored. The trick to making each line with only one pass is to realize it doesn't matter if some of them aren't perfect. Your eye cannot see the ones that aren't perfect, you can only see the whole pattern that all of the lines make together.
