To transfer to T-20 schools, you have to have a better GPA, try to make 4.0 next semester. You also need great LORs from your professors.
You also have to do research on the programs of those schools. You need to know what is the difference (research, professors, etc) between the programs so you can tell a compelling story to AO why you want to transfer.
Finally, you need to get familiar to the programs and to know the courses the students there taking each semester. You have to be on par or better in taking the required courses so you can graduate in 4 years (including the time you spend at Cornell). They do want you to graduate in time.