What makes a bad portfolio?
Too little work on show. While including too many examples of your work is the most common portfolio mistake, designers at the beginning of their careers can often make the opposite mistake: showing too little. Put simply, if the Work section of your website is too sparsely populated, it doesn't give a great impression ...
What makes a good portfolio?
A GOOD PORTFOLIO SHOULD TELL A STORY
Prospective employers and potential clients want to see your thought process and the ideas behind your best designs. So, in addition to sharing images of final designs, a good portfolio will often also include sketches that help add clarity to the work.