My first scratch-built common crossing. (Well actually it's my second, but the first one ended up in the bin after some over-zealous 'adjustments' with the soldering iron!).
In the end I found the best instructions to follow were those on EM Gauge Society manual sheet 1.2.0 (4). The crossing is assembled as a unit, soldered to brass strips at the timber positions (these still require trimming on the photos).
Here's the completed assembly:
And here it is temporarily in situ:
Obviously we'll see how successful I have actually been once I've built the whole turnout and I can actually run some stock through it!