A good circuit layout is extremely important if you want anyone else to be able to understand it, any decent engineer can see what a circuit does just by the layout avoiding the need for in depth analysis.
In this example you can see a good layout on the left which is instantly recognized as a differential pair amplifier with current mirror, on the right is the same circuit but with a very sloppy layout that most people would ignore rather than attempt to analyse, some general layout rules are as follows:
Put positive voltages at the top, negative or ground at bottom.
Signals should flow left to right.
Avoid making your circuit layout too cramped.
Use standard layouts so that function is clear.
Don't leave unconnected components.
Minimize wire crossings.
Feel free to suggest more in the comments.
So next time you design a circuit put some thought into the layout, particularly if you're seeking advice.
