I think your portfolio’s content and visual design is perfect. The website looks elegant.
My suggestions would be
*In case studies
Under Research, if you have done any interviews, observations or surveys show them as personas
Under visual design, show HD images which now looks blurry
*If you have Behance, dribble or some other profession related accounts link to them.
Apart from these, your portfolio is very good
In case if you need any reference take a look at these portfolios -