Fantastic article. Do what the instructions say, and you will conquer!

Actually, there are only 11 metal clips. From the face side:

On the top, only 1 clip centred 35mm from LHS. Avoid the first 30mm on the LHS, and the last 20mm on the RHS

On the RHS there are 4 tabs centred at 20mm, 40mm, 65mm and 85mm from the top. Take great care to avoid the topmost 15mm

On the LHS there are 4 tabs centred at 20mm, 40mm, 65mm and 85mm from the top

On the bottom, there are 2 tabs, each one 10mm in from the edge.

Also, I bought 2 spudger bars with the battery, and found them invaluable. The plastic ones supplied are nearly useless