Quote from: Sarah Dreams
Entschuldigen Sie bitte mein schlechtes Deutsches
It should be "Entschuldigen Sie bitte mein schlechtes Deutsch."
Without the "es". You would use the "es" if German is an adjective and followed by a noun.
For example.
"Ich habe ein deutsches Auto."
"I have a German car.
In that case you write "deutsches" lower case.

lol... I sound like a teacher. xD
It's also very formal, but it's good that you used "Sie" instead of "sie". There are a lot of people in Germany who don't capitalize it when they mean "you".
A capitalized "Sie" is formal for "you" and a lower case one means "they".
Phew... German is a complicated language I guess.
If I had to chose one I would chose English instead.
Oh my... I'm babbling again. Hope this helps. ^^