covering four screws that hold the whole lens together.
step 2: take your lens apart!
i bet you have this box laying somewhere in your kitchen, now its time to use it!
but first clean it. seriously, do it. we don't want any debris in you camera chamber now do we?
now cut out the bottom of the box and smooth out the edges.
now fit part of the lens containing the glass in the hole you just cut out.
it might not fit at first try, so what i did is, i warmed up edges of this box with a lighter and when it was still warm, i squeezed lens in. just don't melt it, 