You should prepare and maintain a master resume, which can be quickly adapted for specific needs. Resume tips Make it professional looking but not gratuitously flashy. Absolutely, positively have at least one other person read your resume and cover letter critically.
Mistakes are fatal.
Run them by a faculty member. Mistakes H ere is a template to start you putting together your master resume. Don't worry about format initially, just get everything there. Remember, this is the master resume, and you don't actually send it to anyone. It is edited down to a form you would send out.