This is the audio exerpt of rʲ spoken within a word. It may sound a little short or unclear, but that's exactly how it's in the real context. For more details, read the below explanation of pronunciation and listen example words that contain rʲ by pressing the word buttons.
1. Break the airflow by touching the point above the alveolar ridge with the tip of your tongue.
2. Repeat the interruption to produce a vibrating sound.
3. Vibrate your vocal cords.
4. Additionally raise the central part of your tongue to make the sound softer.