Yout soldering looks fine. Nice install. Looks better then the install i did in my jasper(it was a pawn shop box someone burned all the qsb points from the board, which took me like 4 hours, to solder wires to the nand points, which then some of them got bridged, and in the process of fixing that i burnt some of the points on the nand chip, then had to do trace repairs on it to get it to boot at all.... Long story short for my first demon install i had a damaged board to work with, but in the end it works, and i still use it as my primary xbox.) Have done may since then with no problem except for the sonus eject point..... Another nightmare the wire got caught on the case when i was putting the board back in it. lol..... but then again for all the damage to that board i still managed to fix it

and it shows that even a fairly experienced solderer can make mistakes.
Afterthought: Switch the pc/xbox switch to xbox, if you havent already.