Hello pal,
You may want to search further down the forum directory for the "Rate My Team" section. While there, take a look at the stickied threads (these are the ones with the little pins in the title). These threads will provide instructions for how to format your posts.
Additionally, take a look at the various threads around here, and read some entries in the main site's Pokedex to get a feel for competitive pokemon. There are many ways to get involved in the community, and I've found it overwhelmingly welcoming over the years, so don't be intimidated at all.