Tizen Developers

I find mobile applications are everywhere, where these applications are extensively being used for communication, knowledge sharing and entertainment as well as gaming purpose. I wish to learn and be a mobile application developer preferably in android platform as this seems to help me achieve an excellent career. I have programming skills in C# and Java, will this help me in application development. I wish to do some certified courses along with internship from some institutions like that of Cestar College Toronto in mobile application development. What are the other criterions to become an apps developer other than programming skills? Any suggestions will be greatly appreciated thanks.