What makes a good manager?

This is a very hard question. To me, there are so many qualities of a good manager. The First,** you must know how to command. Secondly, to become a good manager you must be punctual and tactful in your work, and you always kind to his/her+ your colleagues to they always comfortable in your work. Finally, we+ you must be a good planner in order for your company to develop. to development for company. Besides++, we a good leader must speak English very well if the company is have partners around the world.
Thank you. Check my text, please.

*Watch your spacing with punctuation. There is no space between the word and period "." or comma ",".

** Other options: "The first quality is..." or "First of all..."

+ Pronouns must be consistent. If you use "you," you cannot switch to his or her. 

++ Besides isn't quite the right word. Technically the sentence works, but "besides" implies an argument (for lack of a better term). Instead I would suggest, "Most importantly." I also replaced we with "a good leader" just to remind the reader what you're talking about. It makes your point sound stronger.