Miranda,
That was one of my biggest struggles in creating my e-portfolio, plus the nervousness of not knowing if mine was going to be "good" enough to present....and I hate to admit that I procrastinated for about 2 years. At some point, I downloaded the 30 day trial and just went for it...you could say that I gave myself my own forced deadline...30 days :) which definitely helped me to get it all together. I started with a brainstorming session that developed into an outline of subjects that I thought would be easy, fun, and interactive. I created 2 "more serious" samples and a few fun subject samples and little by little, I completed the entire portfolio on my 29th day. I think I also started with an idea of the template that I wanted to use for my entire layout, then worked on the samples and added them in as I completed them. You can do it...it's just a matter of starting and finishing :)