Reveal the word
Inhale and exhale three times, blow hard and continuously. Stick your tongue out: lick your lips doing circles both to the right and left.
Try to vibrate your lips as if you were cold (brbrbrbr)
Put your tongue between the lips and vibrate it (rrrrrrr)
Put your tongue on the wrinkled area between the teeth and the palate and blow (rrrrrrrrr)
Observe the pronounciation of rick in English and ric in Catalan. Look how, when pronouncing <r>, the tongue goes forward to the front of the palate, behind the teeth.