Please point out my grammar mistake about Saudi Arabic business etiquette

There is a strong religious influence in Saudi Arabic life. Therefore, in their business etiquette we should follow the tradition when it comes to particular events. About wearing revealing clothes, for example like sleeveless garments, shorts or miniskirts all of that are prohibited. When someone do business with Arabian, we need to develop the relationship first just like friends. Don’t discuss your business in the first meet, only after having met about three times you can move on to business topic, it will be more suitable and polite. If there are the agent participate your business talks that would be better to push business successful.
During the meeting, we need to notice always use right hand, because the left hand is considered unclean, even about handed gift or salutations. When host receive tea or coffee to guests, someone(?) should take it all slowly and maintain eye contact.
In conversation avoid controversial issue about political or religion, most important thing about don’t talk about Arabian’s wife or sister. In terms of behavior, don’t cross your leg when you are sitting, your feet can’t confront the host or let your bottom of shoes show up those of things are impolite.
In a business meeting, women should accompany with male to met else, she should notice herself have covered her collarbone, elbows and knees. Punctuality is the important and special thing in Saudi, we always need to keep on time, but it is customary for Arabian usually delay, we need to be patient for this.
In September is Islam’s Ramadan it’s slowly business month. Most of the company will avoid this month for business, because if you meeting during middle or evening will be interrupted by their pray for 5 to 15 minutes for five times everyday.
There is an interesting thing about negotiate, their businessman respect more the customer who good at negotiate than someone just buy they want.