When facing a customer, what basic knowledge should you know as a salesman of embroidery?

For my experience, I suggest tips below:

1.Which type of embroidery patches your customer needed?

2.What kind of stitches can be embroidered, and what stitches are unable to?

3.Are the size, colors and letters all clear to see and be embroidered?

4.Some common kinds of stitches.

5.How to exploit a special sample? Can it be done in production?

6.Have sense of how many materials an order needed (thread, cloth), and how long it takes to finish the order?

7.How to reduce wastage

8.What鈥檚 the material for making embroidery badges and what鈥檚 a patch made of?