What brand of yarn? If it's Lion Brand, they have TONS of their patterns on their website. The Christmas Tree skirt might be on the yarn-company website. At least it explains the 8 trapezoidal panels (how I envision them from your instructions).
The knitting videos at this site are very good; b/c I've crocheted for so long, the Continental style of knitting is easier for me to deal with: the yarn is controlled by my left hand for both crochet and Continental knitting.