Ok,, here's the quick solution..
I'm not going to ask how many % your battery left... But try this..
1. Take out your battery
2. Leave it around 30 min - 1 hour.
3. Try to boot it again.
there is a possibility that you run out of your battery power when you made the mistake, a simple but frustrating mistake just because of this.
Let me know later..
---------- Post added at 09:30 AM ---------- Previous post was at 09:22 AM ----------
You can also plug your charger and see if it is charging.. then you can try to boot it up...
I'm not suggesting this way for a very first option, recalling you have made a patch to your phone earlier..
Just Click If I Helped...