You need to take close up pictures of the areas where you did solder.
And also provide more info.
What chip did you use, did you use flex cables? How did you Connect dat0?
Did you disconnect battery before modding?
And also the areas around cpu shield if you did take that of (hard to see on your pictures but i think i can spot some mb scratches)
Edit:
And it seems that one of the connectors for the screen? has taken some damage/heat. Atleast the plastic.
And a components missing between cpu and emmc shield?