Hey i am new to 3d for trying something kinda weird I would rly aprciate your advice.
i am going to try to paint depth maps to sculpt 3d models ( only bas reliefs ) does it make any sence? will it work ? what should i be carefull about

Idk, but often you see people doing it other way round: sculpting models and then baking those details into normal map and then apply it to lowpoly unsculpted version of model.

>>1009635 (OP)
That's what zbrush was originally for

you can do this, it makes sense, its not the hardest thing to do, but new technology has made the technique obsolete