Keep writing music. Always write music. Even if it's only a few minutes a day. Always write, and always look to improve yourself and better your skills. The more you write, the better you will get.
Always learn new things, deeply analyze music that you like and learn how to express emotions and ideas with music, preferably music that has your own voice.
Your education gets 80% of its value from you: the diploma isn't going to get you any jobs. Get involved, make connections, and participate deeply in your education or you'll walk out of school with nothing but a poster and debt.
Remember the value of custom content. There are so many ways of finding sound for your projects these days – but in my mind (and I might be slightly biased), there’s nothing better than using custom-created sound. It gives you material that’s created to exactly match your requirements and fit with your project and vision. It also gives you a unique brand asset that you can use going forward.
If you're interested in synth sound design, the best thing to do is pick one synth and learn it inside out. Whilst there are an enormous number of softsynths on the market and their architecture varies, many of the lessons you'll learn by focusing on that one synth can be applied to the others
Never ever lose sight of why you became a musician first. Work in this business for any length of time and you’ll start to forget the reason for getting into it to begin with. That’s suicide, as far as I’m concerned.
If you like to produce sample packs, music, sounds or whatever, you need to know, that market is super competitive these days. Also it’s not easy to enter the good shops and make the connections, BUT you NEED to try and never give up if get rejected once.
As composers, creators, I understand that versatility in your writing is key. Mastering a variety of genres can only improve your chances of success in an industry that exists primarily with brief work. Saying that, make sure you take the time to be yourself.