How to pronounce the makhraj?
The term "makhraj" in Arabic means articulation point. By definition it is: the place the letter is emitted, meaning a sound that comes out of the mouth relying on a specific place of articulation or an approximate one.
So we don't pronounce the "makhraj", but we pronounce a letter from a certain "makhraj" or articulation point. To view the lessons on the articulation points of the Arabic letters, please see the following link: http://www.abouttajweed.com/articulation-points-areas-of-the-arabic-letters/index.php
You will see at the link that there are many different lessons for different groups of letters, or individual letters. Insha' Allah you will find the lessons useful in helping you pronounce the Arabic letters correctly and apply this to your recitation of the Qur'an.