It's important to include clear guidelines on the sorts of things that are encompassed by a Success vs. a Good Success or what have you. Powered by the Apocalypse world games do this with their Player and GM moves, Blades in the Dark does this with copious examples and a lengthy explanation of the rules for position and effect (as well as how to modify them). Burning wheel does this by including rules for just about everything. In the text itself, you don't describe what constitutes Success or failure, which sounds like it would be obvious but it's very important to codify in your rules system that when the dice hit the table, something needs to change (for the worse, or the better). Otherwise there's no point to rolling them.