You said that you have to be 80-85 to get heirlooms. On my first char ever (undead rogue) i played a lot of random battlegrounds and i got the pvp shoulders. It takes time but it was totally worth it :D. And btw great guide.
You can smooth the hard edges of a selection by feathering. Feathering blurs edges by building a transition between the selection and surrounding pixels. This blurring can cause some loss of detail at the edge of the selection.
If we want to insinuate some movement, we can make a few paths on a new layer. Before stroking, select a small hard brush and a darker color. Right-click the path and choose Stroke Path (while having the Pen Tool or Path Selection Tool active), in the options choose Brush and check Simulate Pressure.f you are unsure how to cut something out, look for a tutorial on that subject first. When you are ready and feel like you have a clean cut, go into the layer's blending options, choose Color Overlay, and set the color to black. This should give you the silhouette of what you cut out.