Didn't have much time today, but was able to go to my cousins today and borrow his flaring tool. I removed that first upper line and decided to just give this flaring tool a shot while laying in bed. One end was already flared, so I only had to flare one end. So here's my pics of the process of applying a double flare to the line. Was pretty simple, and took only a couple minutes. Turned out just fine it looks like. I suppose the real test will be once it's installed and hopefully doesn't leak.
Break out your professional deburring tool:
Use the die to measure the correct amount of line is protruding out of the clamp
First flare created with the die
Use cone to make the double flare
Double flare done
Also, the stereo company from Chiyyna shipped out a new stereo to me, that should arrive here in the next few days. Hopefully this one lasts a little bit longer than the last one. It cost me $68 to ship it back to them, then another $10 to send me a new one. They won't reimburse any of that. BS in my opinion, but not much I can really do. Just hope this one works better.