 The best tip would be, you need to look at what your country is really in need of and that's where the focus should be. Prepare your proposal carefully with a lot of thoughts and be confident. To gain this scholarship, it's more about how you translate your dream into the real works that you want to pursue. Talk to yourself what you're passionate about and make sure you show the interviewer that you really are into this issue and that you're ready to change the world. They should approach the award with the mindset of coming to contribute, coming to solve problems in the community. Try and try because you will never know if you never try. So sometimes it can be hard to leave your country but it's for sure the best decision that you can do because the scholarships have allowed to offer you.