I used to be a part of one history reenactment group some time ago. Such groups basically reconstruct elements of daily life of people from a selected time period; my group was interested in early Middle Ages, from the 8th to the 11th century, from the Eastern and Northern Europe. Personally, I used to reconstruct a viking woman from today's Sweden areas. Most of you will be shocked, but vikings were not half-naked barbarians with horned helmets. They had no horned helmets. Really.
Anyway, my favourite part of reenactment has always been all the suit making. Buing materials, planning, cutting, sewing (hand sewing!), embroidering. Then, wearing. Generally, viking clothes are very easy to make, though I admit that the materials aren't the cheapest, if you want to make it as much accurate historically as you can.
I've prepared a simple tutorial about how to make a typical viking dress. As I've said, it's very easy to make, but it takes time, when you don't use a sewing machine. Up to 4-5 days. What do we need? I'll write about the historically accurate stuff.
(Click on the picture to view it full sized and to see descriptions)
Threads: linen, woolen or silk. No cotton. Cotton is historically accurate in the Middle Ages period reenactment, of course, but only if you reconstruct American history...
We'll also need scisors (oh really?), needle and a measure. And some free space on the floor. Pins would be nice, too, but not necessary.
As you can see, it couldn't be more simple. Remember that you need to adjust the lenghts to your body's shape. I'm not a tall person, so these measurements are just fine for me (if you're around 1m60, at least half of your measuring is done now). More or less – measure yourself from your shoulders below (not from your head; some help would be nice) and add 10-15 cm. Measure around your chest (not around the waist, we've got leather belts for these things!) and add 10 cm to each side of the back and front dress parts. Measure arms and add 10 cm, measure around arms (not forearms) and add 15 cm at least. Remember, it's better to add too much and then remove some than add too little and waste the cloth.