Note: This is for inspiration only, as the people of Skyldinghiem travelled, vikinged and traded far and wide it is possible to include many influences from other cultures of the same time period. If you wish to include something in your character's costume that does not fit the guide below please feel free, just come up with a cool story about how you acquired it.
At their core the Skyldings are a practical, vibrant people who treasure well made, hardy clothing that is both practical and beautiful. The crafting of the details, whether they be embroidery, beading, carving etc are celebrated more than flashy fine materials. All outfits can be embellished like this, from working garb to feasting garments.
Materials that are common are wool, linen, leather, and fur. Materials like silk and cotton are used less often, and by those who can afford imported goods/spoils from vikings.
The basic working outfit that every person owns is a short tunic, pants and cloak. For festive occasions either newer more elaborately embroidered or embellished tunics would be used, or in the case of feminine Skyldings, longer tunics with an overdress may also be appropriate. Hats and headcoverings are typically worn during the cooler months.
Jewelry made from metal and beads are common in the form of brooches, necklaces and cloak pins. These have huge variety as they are a common token from travels and vikings. A person’s status as Skati is symbolised by a metal (typically gold) torc. (external link)
Feathers, tusks, teeth, bones and fur are often used to adorn clothing, armour, jewelry, and hair or hung from belts as tokens to represent the connection with the ancestors. Godi use face paint to adorn themselves and their followers to invoke the spirit of their chosen god or goddess when conducting rituals. Examples of this include before going into battle, to bless the harvest, bondings, and coming of age ceremonies.
For warriors, their round shields are painted with their personal patterns which represent their chosen spiritual path and clan. Shields of other shapes are rare, typically taken from a fallen foe on the field of battle. Armour is typically made from leather or chain.