To make a letter tafkheem or heavy it says to elevate the posterior tongue area to the roof of the mouth. Do we elevate the tongue as we say a letter or do we first elevate the tongue to the roof of the mouth then say the letter?

Question
To make a letter tafkheem or heavy it says to elevate the posterior tongue area to the roof of the mouth. Do we elevate the tongue as we say a letter or do we first elevate the tongue to the roof of the mouth then say the letter. thanks
Answer
The elevation of the posterior part of the tongue for tafkheem is done at the same time as we pronounce the letter.  It is a simultaneous event. 
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