If you would like a beginner's guide to these sorts of issues, take a look at the article wizard.
If you are unsure about how to edit Wikipedia articles, take a look at this tutorial.
For a more general discussion of writing your first article, see "Your first article".
How to post a request
Place a Wikilink, with the title of the page inside [[ and ]] - for example, [[User:Example/Lipsum]] or [[Cats]] - in the box below.
Click Click To Add Request
In the new article, Write a brief summary of your work or what in particular you need help with, but do not post the whole article here.
If you have rewritten an existing article, you may wish to provide a diff link from that article's history that shows your changes.
Check regularly for responses to your request; they will most often be made here.
↓ Post your request using the box below. Replace "Untitled" with a wikilink to your article - e.g. [[User:Example/Lipsum]] or [[Cats]] ↓
After Receiving Feedback
Check back here often, as you will receive a response here.
Respond to the feedback, either with a simple thank you, to ask for help with anything mentioned, or, after you've made some of the improvements, what they think of them.
Consider helping out here in the future - anyone can read up on what articles should be like and provide constructive criticism.
Are you providing feedback?
Please consider notifying the user whose article you are providing feedback for by placing a message on their talk page, so they will be able to read it in a timely manner and reply if necessary. You can use..
{{Feedbackreply-sm}} A template asking the user to check back here and consider responding
{{Feedbackreply-alt}} A more personal version of the first offering your help with developing, moving to mainspace, etc.