You can write and submit your own application reviews directly on iPhone.
Tap Ratings near the bottom of the Info screen.
On the Reviews screen, tap “Write a Review.”
Select the number of stars (1–5) for your rating of the application, and enter your nickname, a title for the review, and optional review comments. If you’ve written reviews before, the nickname field is already filled in. Otherwise, you’re asked to create a reviewer nickname.
Tap Send.
You must be signed in to your iTunes Store account and have purchased or downloaded the item in order to submit reviews.