Appearance of penis (size before beauty or no)?

[RawDog]

Is it true that PE exercises (stretching and jelq) work? Are these results or lasting and exercise should always do?

Yes, PE works, depending on how dedicated you are to it, and what your priorities are.

Do you can talk about an average increase or is it a very individual and some of these exercises do not even use??

Varies from individual to individual.

Is it possible to achieve with these exercises?

I highly recommend re-reading my post (and D_D's) and posting the same questions on the PE forum or Thunder's Place if you're still confused. PE is such an individual decision, requiring a lot of dedication.