Create new shape from frame riddled with rot (8)
I believe the answer is:
reformat
'frame riddled with rot' is the definition.
I know nothing about this answer so I can't tell whether this works.
'create new shape' is the wordplay.
'create new' becomes 're' (I can't justify this - if you can you should believe this answer much more).
'shape' becomes 'format' (I've seen this before).
're'+'format'='REFORMAT'
'from' acts as a link.
Can you help me to learn more?
(Other definitions for reformat that I've seen before include "Further arrange" , "Change layout" .)