Idea
New to Writing
Probably the most important thing that'll help you get better at the start is...to write. Write and read. Paying attention to what you are writing/reading is also very helpful, heh.
The Idea Itself
As I have said more times than I have published storygames, I'm a strong advocate of 'any idea can work', so if that's what you want to write, go for it.
But that isn't why people ask about their ideas, so I'll add:
Outcast loners need to be handled carefully because they're not very rare, which means readers can easily roll their eyes at your protagonist's angst. This doesn't mean outcast loners can't be cool tho (it just might not be as easy to write as some people expect).
Anyway, what are the powers? How big is the untapped potential? Having a story about getting stronger is good and all, but it can really get messy due to how vague it is.
Sharing the powers seems like a cool concept that can really put character interaction at the forefront, and that does sound neat.
You want to stay focussed on your story so that it doesn't get out of hand, keeping the scope of what you're writing in mind is very important, especially when you're new to writing, since it is SO easy to just keep adding stuff, and then lose all motivation because you're now writing an epic to put LotR to shame (just length wise, mind you).
Offering society something to chew on is a bit less cool, since society is so vague and something we live in. Anyway, my point is, you'll want a stronger theme surrounding that to have it be engaging. What is he getting society (and by extension, the readers) to think about?
Themes have so much potential but how far you want to go depends on what you're writing and why.
Overall, the idea can work, but it is the specifics that'll make or break it. Certain issues that may arise can also be fixed later, which is something new writers may like to ignore (since who wants rewrite/proofread?).
Excerpt
I'll start by saying I'm not here to proofread (since I'll miss something and feel stupid), but: 'You let the hood slam shut, regretting haven grown accustomed to the warning lights.' You want to reword this, haven isn't the word you're looking for, but just replacing it with "haven't" isn't enough either.
Mouthing the words or reading aloud is a good way to catch some of these mistakes, but it is important that you read what you actually wrote and not what you think you wrote when doing this (which might sound obvious, but you'd be surprised what mistakes can slip by when not paying enough attention).
Anyway, the writing seems to move along well, which is good. The setting is only beginning to get fleshed out, but what is there is getting me to wonder about stuff, so that's nice. Considering you also have the pouch for establishing the goal, you're definitely off to a good start.
You even build up some stakes and tension at the end, regarding empaths (and the fact the protagonist is one). Good stuff!
As was mentioned by Enterpride, 'you' and its variations are overused as sentence starters, but personally, that didn't bother me too much. Trying to word sentences in more interesting ways is, however, worthwhile.
In second person it is very easy to just use 'you' constantly, but that repetition can become an issue. You do this, you do that, etc, is also a pitfall you want to try to avoid. Having a story just be a sequence of actions can be rather dull, and is worth watching out for (this is something that can be fixed after the initial write-up, as having an idea of what happens 'action by action' can be helpful, but do what works for you).
Conclusion
Look at Enterpride's feedback, maybe find something useful here too, and get back to writing! It does seem interesting from what I can see here, but an opening that piques my interest isn't enough for a good storygame, aha.