One of the biggest things you need to be mindful of is bending at the waist, don't drop your bow arm, bend at the waist. I always come to full draw as if I was going to shoot the tree opposite of me at the height I am at. Once at full draw I slowly bend at the waist until the animal comes into the sight window, pick a small spot, settle the pin, fire.

To avoid misjudging distances, mark off the distances at ground level based on your pin settings, use different color tape or spray your trees with different colors.