Hello Aspirant,  I am providing you a link. Please read all the process and do it stepwise. 

https://bschool.careers360.com/articles/ap-icet-counselling

You can also login in apicet.nic.in and login by your Hall ticket and paid the fees. 

I hope this will help you. 

Hello Siva

Firstly, visit the AP SCHE official website that is sche.ap.gov.in

Then click on the AP ICET Bar.

The On displayedCET Steps are displayed on the screen like below figure.

For more information you can follow this link: https://bschool.careers360.com/articles/ap-icet-application-form

Dear aspirant

You may look here(for link) for the fee payment or it's status for APICET 2019 

https://sche.ap.gov.in/ICET/ICET/ICET_PaymentStatus.aspx

Or use the below link to know more details about APICET

https://www.google.com/amp/s/bschool.careers360.com/articles/ap-icet-counselling/amp

Good luck!!