I have developed several architectural portfolios that have each served a specific purpose in both my academic and professional career. My first was to get me into graduate school. I then made a second portfolio of my graduate work to take with me into job interviews and send out to firms. My third was based on experiments through this site and was meant to be a synopsis of my understanding of visualization. In all of these cases, I played up my strengths and built on what I had learned from the previous iterations. I also have had opportunities to review many other's portfolios through both and academic and professional lens and have been able to pick the brains of those making the decisions to see what they were looking for.
I am still learning and refining, but below are posts describing my thinking behind my PORTFOLIO VOL 2 developed after graduate school. I have also created PORTFOLIO VOL 3 page with even more information on my workflow and illustration breakdowns so be sure to check it out.
An Overview of things to think about when setting up a portfolio page and the settings I used to setup my own portfolios
Part 1 of this series, the video describes the steps used to prepare a model pic for one of my portfolio pages.
Part 2 discusses the initial setup of the portfolio's first page as well as adding adding images and linework
Part 3, this video goes over some of the techniques I use to add and manipulate text