The basic structure is forming up.
It slightly resembles a chest.
It is missing a lid.
It is still quite shaky.
It looks like a small chest but it could be so much more.
It does not look quite safe yet.
The base looks strong now but lid is still quite weak.
The chest is looking much larger.
The construction looks bigger and bigger. 
The structure is now stronger than ever before.
The chest looks big enough to hold out several equipments.
The extra material has made the chest almost impossible to breach.
The chest construction looks quite large and safe. 
The extra material in support-structure quarantees quality.
The chest looks just perfect and there is very little unfinished.
The construction looks very big and sturdy.