Thank you for the opportunity to help you with your question!
an online portfolio is very important because it gives your customers and clients the chance to know you better. It also makes one to be able to find available opportunities and it helps in defining your strenght.
A great online portfolio should have components like a vision and a mission, current image, an informative and interactive description which should not be too lengthy and good choice of words.
Please let me know if you need any clarification. I'm always happy to answer your questions.