How to add more fields to the expert form

Hi ,
I need to add to the expert form please see below the fields i would like to add.
1. Position title - Under Name
2. a second location field with a dropdown box under for State- so i can have 2 location options .
3. i would like to duplicate skill and add a dropdown option to the second skill area or a tick box for area of interest that i would like to also be a search option in the search form.

i have have edited the code for the social options with fantastic results i just need a little more assistance with the above.

Many Thanks.