Canada

MS/ M.Tech in aeronautical engineering from top USA university or IITs with excellent grading will increase your chances to get a job in NASA.

Almost all the universities are best. Kindly, tell me your IELTS score first.

It majorly depends on which university you are getting admission in as all three countries have some of the best business schools. If finance is not a constraint, then Canada is the best choice. Germany stands on 2nd number and New Zealand on 3rd.

If you have worked in the firm and know about it, then you may mention it. It also depends on the course you want to pursue.

First of all, don't try to copy it from anywhere. Keep it simple. Spend some time to think, why you want to pursue a particular course? How is this course going to affect you? Add some of your strengths and weakness, if any. Also mention, what difference will the particular course make to your personality?

To make things clear, please note that universities don't grant visas. Any university can only grant you admission to a course you applied to. Student visas are granted by the Canadian Embassy and consulates, and admission to college and visa applications are two very different processes.
Sorry, Fraser international college is not under the SPP. However a similar named university, Fraser Valley University, is under SPP.

please mention your academic profile and IELTS scores.

It will depend partly on your IELTS scores. If you manage to get 7+ overall bands, then you can apply to any top university under SPP. If you get less than 6.5 bands then you will have to go for non-SPP application.
Also, please mention which course are you interested in pursuing?