Splunk App for AWS and Splunk Add-on for AWS are installed on my box.
I have added my account in Splunk Add-on for AWS, need further steps on how to search my Cloud Watch logs from AWS in Splunk AWS app.
have you checked the docs?
https://docs.splunk.com/Documentation/AddOns/released/AWS/CloudWatch
As @diogofgm mentioned, it's all in the docs 😉
If you are interested, please take a look into here.
https://github.com/amiracle/cooking_with_Splunk_and_AWS