Hi there,
To impress people;
1 - Have and present smile always,u can confirm that the person u wanna impress is impressed,when you get a smile from them,at that very moment u r starting to impress them
2 - When u r trying to impress others,u MUST listen what they r speaking and respond,at the time its all about them not u
3 - Start to ask the stuufs about that person,family/career path/interest/etc,but it shud point around them
These r simple techniques to impress somebody,but this doesn't work for all,especially i will recognise what people r gonna do for me by the first moment itself.But,this is the way to break the ice of opponent and impress.
And often use their names,coz people often like their name,so if u use the names oftenly,they'll start to like u.