Grammatical problem ( for + )

Hi,
" It may be mentioned that after getting your comments on above drawings , we will
start for final drawings for the same . "

Please let me comment on various parts of this sentence.
'It may be mentioned'
Technically correct grammar, but terrible style. Better would be 'We might mention' or 'Please note'. The passive is not good here.

'getting'
We say this a lot, but tend to write a more formal word, like 'receive'.

'above drawings'
Grammar requires 'the above drawings'. Simpler and clearer would be to say 'these drawings'.

'start'
OK. You're right, you shouldn't say 'for' after 'start'.

'final drawings'
You need to say 'the final drawings' or, to avoid repeating 'drawings', say 'versions'.

'for the same'
Bad English, unclear what 'same' refers to. Also a bad business cliche, that I admit is often used. Much clearer would be to say 'based on your comments' or 'based on what you say' to avoid using the word comments twice..

So my suggestion is
"Please note that after receiving your comments on these drawings, we will start the final versions based on what you say."

Best wishes,
Clive