(GRE Success! ) Sentence Correction Question

Hello Everyone,

Is there anything wrong with this sentence?

" While a portfolio<http://theundercoverrecruiter.com/5-reasons-why-all-job-seekers-need-have-work-portfolio/>
may
not be essential for many positions, having physical representations off
your work that you can share upon request will make you look good because
you went that extra mile."

Source:
http://theundercoverrecruiter.com/mention-interview/?goback=.gde_3767238_member_209416831&buffer_share=4e1b6

Good Luck,

Srihari

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