You may already have good samples, but what do you use or have? If you describe your setup, we can help you more easily. Regardless, just remember that most people hit notes on the beat harder than notes on the offbeat,usually. If you're in PRV view, and you're writing a straight 1/8th note pattern, for instance, try giving the first note a volume of 115 - 120, second note somewhere from 75 - 80, third note 100's, next note in the 90's, and so on. Write a measure or two and test it out until it sound right to your ears. Then loop or repeat. Consider this just a starting point. Google tambourine samples! There are many that are free. Many virtual drummers have ready-made loops. Google tambourine loops. Hope this helps.