Upskilling allows you to gain exclusive skills through qualifications and makes you a more competent employee. You will see new opportunities opening up and with your improved performance. You can upskill by simply joining a #Postgraduate_Diploma course or qualification which is directly related to your job.
A career portfolio is basically a support document that is used to support what your resume claims. Here's exactly how to make one. http://www.classycareergirl.com/2013/02/how-and-why-you-need-to-make-a-career-portfolio/