Summarize the following:
Take a piece of foil that is large enough to easily cover a given section of hair. Slide it underneath the section you just secured. Let the hair rest on top of the foil. The foil should create a barrier between the strand you pulled out using the comb and the rest of the hair in the section you're working with. You will apply your highlights and lowlights in a consistent pattern throughout your head. You can start with one highlight, and then move to two lowlights, and repeat this pattern throughout the section, for example. Choose whatever pattern you prefer depending on the ratio of highlights to lowlights you want. Highlighting means coloring strands lighter than your natural hair color while low lighting means coloring strands darker than your natural color. Use the brush that came with your dye kit. Dip your brush in a small amount of the highlight dye. Then, brush the dye into the section of hair above the foil so it's evenly saturated from root to tip. As you brush, the hair should become plastered to your foil. You can leave the hair for now as you continue to apply foils/dye. You will fold up the foils when you're done with the section. Repeat the same process you did with the tail comb before, moving downward through the section of hair. Just below the hair you just died, slip the end of the comb under a small strand of hair. Place a piece of foil under that strand to create a barrier between this new strand and the remaining hair in the section. You should add your lowlight dye to this section to create variation. This is the exact same process as before. Gently paint the dye on the hair using the brush that came with your kit, moving from root to tip. Again, the hair will become plastered to the foil. Keep moving from your highlight and lowlight shades, using the ratio you want. Continue the pattern until the entire section is dyed and separated by foils. Gently fold the pieces of foil around each section of hair. Do not press too hard to avoid getting a folded crease in your dye. The ends of the foil should be near the roots of your hair when you're done. Folding the foil helps it stay in place while you dye the remaining sections. For every section, repeat the exact same pattern to highlight or lowlight your hair. Separate your hair into small strands, using the foil as a barrier, and then paint dye on each strand. Vary between your highlight and lowlight shade.  Once every strand is dyed, wrap the foil around the strands. Remember, you may have to bleach your hair first in the sections you're highlighting. This is usually best done at a salon and should be done before you start the highlight/lowlight process.

Summary:
Apply your foil underneath the hair. Decide on the pattern you're following. Coat the hair above the foil in the highlight dye. Section off another layer of hair. Apply your lowlight dye. Repeat this pattern until all the hair is dyed. Fold your foil. Repeat this pattern to dye the remaining sections.