Wikipedia is a project to provide high quality, free info to as many people as possible. Therefore, all information we include needs to be accurate, and we need to be able to make sure of that. So we can't have any original research or information that hasn't been published before. We have a verifiability policy that requires all information to be attributable to reliable sources. Therefore, any subject that has not been covered sufficiently in sources independent of the subject itself (i.e. the website of the subject won't work, because it's not independent) cannot be verified and cannot be included.
Also very fundamental is our neutrality policy, which is why you are strongly discouraged from writing articles about yourself or subjects with which you are closely involved: it's too hard to create a neutral article.
If you still want to write the article, please see and honestly assess whether your article would be able to meet those criteria -- otherwise your hard work will likely be deleted.