What do you need pseudocode for? If your employer requires it to document program design before you begin code, he probably specifies a grammar and has his own idea about what is sufficient detail. At the other extreme, it can be something that you write on your napkin while enjoying your morning coffee. In the first case, we can only guess what the boss might want. As long as it is for your own use, you are the best one to decide when it is done. It is done when you believe that the work required to improve it is greater than the work it will save you later.

I often use Perl itself as pseudocode. I call subroutines which do not exist yet, omit initialization and formats, make my best guess at syntax that I am not sure of, etc. Then I compile it and fix the syntax errors. Then I add details until I have a working program.