I'm emailing you because I have a younger cousin that is passionate about singing. He loves singing and writing songs. And I'm always encouraging him to do so. I actually think he's a good song writer. For the past 2 years I've been telling him it takes hard work and to keep writing and collaborate with others. He's been doing all that and I'm proud of him for doing so. I think he needs some help to keep improving.
Please watch one of his original songs...
If we can talk after you've watched his video and give me an evaluation of where he is vocally.
I finally got a chance to watch the video. Your young cousin is definitely talented and I was very impressed by his performance. From a musical standpoint he has very good intonation and is very moving and entertaining to watch. The difficulty as a voice teacher in trying to evaluate pop styles of singing is that usually most pop styles and healthy vocal technique are diametrically opposed. For example, look at Adele: a wonderful, soulful singer by pop standards, but in terms of voice technique she is a disaster and is a perfect example of how NOT to sing if you want to preserve the voice into your thirties and forties (indeed, she has already undergone laryngeal surgery before the age of 25!).
Your cousin, as appealing as his voice is, has a very throaty sound and a common pop characterization that we call a "vocal fry" that in the long run puts him at a very high risk of injury and impedes his ability to project. It will also seriously limit his range (meaning high and low notes). Longevity, projection and range may not be priorities for him as is the case with most singers of that style, which is perfectly fine and if that is the case he does not need voice lessons. However, if those are skills that he wishes to acquire he will not only need careful supervision of a qualified voice teacher but will also need to be prepared to significantly change his sound.
Hope that helps,