This is a new style I just tried out today on my sister that I like to call the criss-cross pigtails.
This style only took me 5-10 minutes to do but it does take a lot practice. If you can do french plaits on yourself then this should be do-able for you. If not you could always ask someone who can.
Tartan is one of my favourite patterns and is perfect for the winter season. Tartan comes back year after year so definitely an item worth keeping.