Macbuk, first of all, congratulations on making the time to do things the right way. There is often a lot of "talk" in the online forums, but its refreshing to see the "walk" -- especially with nice clear photo, as you have so kindly provided.

If I can suggest one thing more it would be this. I see you placed your logic board on a carpeted surface. Beware of static because it will destroy chips, especially RAM. And even if you don't directly place your board on a rug, scooting your feet across the floor will generate enough static charge to zip something to oblivion. If you must work on a carpeted surface, I strongly suggest a ground wire around one of your wrists. Indeed, such a ground would be good when working even on an anti-static floor.