"as you may notice" is correct and can be used in written English. In general, it is used to draw attention to something that the reader or listener may already have noticed. For example, "As you may notice from the table, the number of species has decreased significantly over the past decade.".
As you may notice by traveling in our country, there is a peaceful atmosphere".
Here's the list of the most well-rested professions, with the occupation getting the most sleep at the top: As you may notice, several of the occupations on this list involve working outside.
The men have formed a secret order (of which I am running for president and chief executive as you may notice) to loathe, hate and despise him for obvious reasons".
As you may notice, the above tool is only available for OS X Lion.
Use them as directed, and you may notice a gradual decrease in your pain.
You may notice that as you develop, you become hairier on different parts of the body.
"I go for old men, as you may have noticed".
When I feel like I can't trust my brain 100%, Ludwig really comes in handy. It makes me translate and proofread faster and my output more reliable.
Claudia Letizia
Head Translator and Proofreader @ organictranslations.eu