I don't see any specific problems. On the other hand, you have a bit of a rat's nest there, which makes it difficult to trace whether things are going.
I suggest printing a copy of the schematic, then take a continuity meter and ensure that everything that should be connected together, is.
Once that's achieved, you have the much tougher inverse task: making sure things that shouldn't be connected aren't. It's tougher partly because it's impossible to prove a negative, and because you've used uninsulated wire, greatly increasing the chance of unintended shorts.