Good news is: Before 7-8 days, I also bricked my galaxy5 while experimenting with TWRP.
You can use a device called 'JIG', search on Google and you'll find it on internet for $2-$5 and there are tutorials which will help you to make it at home also.
I formatted my whole boot partition (including arm11boot) and everything is gone, so JIG didn't help me.
So, what I need is a JTAG service (This is a totally hardware based service, it can make a FULLY bricked device also alive unless you damaged your hardware). Usually. those JTAG repairers take $20-$30 to make your phone alive. You can also buy a JTAG box for around $120-$130.
If you didn't do anything just except installing the recovery that way, then JIG is what you need and JIG is very cheap.