Extremely sound advice — I started with a program called Klik 'n' Play back when I was about 12, and then its successor The Games Factory a few years later. While these programs were pretty basic compared with Construct 2, they taught me a lot about logic, which is extremely important for any sort of programming. I more or less lost interest in game development for about a decade, until last year I discovered Construct 2 and since then I've dived straight back into it - I've started (and trashed) more projects in the last year than I care to mention...
I really wouldn't set 'going pro' as your ultimate goal, just as I don't think aspiring writers should see getting published as their goal. Your ultimate goal should be to make a great game - one that you love and, hopefully, other people will too. If you can do that, the rest will follow.
In the meantime, play a huge range of videogames and other kinds of games too (board games, card games, tabletop games) - you never know where you'll find inspiration. I'd also really recommend learning a programming language at some point, if you get the opportunity.
Oh and I like your game!