"What position do my lip and tongue have to be in order..."

[hardyweineberg]

What position do my lip and tongue have to be in order to make the ɜː sound (also known as the urr sound)?

 

[5jj]

This sound is effectively a long schwa. For both vowels, the centre of the tongue is between the half-close and half-open positions. The lips are relaxed and neutrally spread.