1- You need to review my electronic design in Eagle format. Make sure it's correct
2- Run the autorouter (components are already placed) and make sure it routes properly the power lines, by properly I mean with enough with to carry the current.
3- It's a simple design with half-bridges that drive solenoids. Each solenoid can consume up to 350ma, so make sure the 24v lines can drive 3A on a normal PCB FR-4 with copper 1OZ