Create a child theme

Create child themes of "Builder" by [login to view URL] (supplied) using ithemes Essence design (supplied) further info on these themes here: Builder: [[login to view URL]][1] Essence: [[login to view URL]][2] essence comes in six colours: blue, red, white, silver, dark, golden this is what i want the child themes to do: 960px wide header categories slider content right hand sidebar widget area footer