1) Be attentive, try and listen to what they say and be very clear about your task before you begin, You don't want to be half-way through your work and then realize you have to do it all over again.

2) Always wear a smile and strike up small talk, ask them about their family and themselves. Ask open ended questions though, Americans love talking about their families. Casually mention how grateful you are to have this job.

3) Be on time and always volunteer to do things whenever people reach out to you.

4) Get a haircut, get a gym membership, and wear well-fitting clothes.