How would you talk to a superior?
Instead of using "tu", I know you use "usted." But does that apply for saying, "tu tintoreria"? What about "tu debes"? Do I have to change that? What do I change it to? Thanks for the help!
Su tintorería instead of tu tintorería
Tú debes... is an order... Usted debe... is an order too, but more polite.
Usted debería... is better, but is still a kind of order
Usted podría... is a suggestion
Yes! Change all of the "tú" to "usted", all "tu" (your) to "su", and all of the verb endings (Usted endings are the same as the 3rd person plural).
Welcome to the forum and good question -- you did a great job of letting us know what you understand and what you needed help with.