Hello Rawaz.
If I understand correctly, your scenario involves a dual homed BGP topology and you want to know how to control, or at least influence, inbound traffic, correct?
Because inbound traffic is essentially sent to you, you do not have the ultimate control of how traffic enters your AS. Your ISP may have outbound policies that will always override all of your attempts to influence inbound traffic. However, you do have the option of influencing inbound traffic. There are several ways to do this including:
* Leaking more specific routes
* Using the MED attribute
* AS PATH prepending
* Community/local pref agreement
Remember however, that the ISP has the final word for inbound traffic.
I hope this has been helpful!
Laz