Ok, you will find here some useful pcbs to make your small power supply easily and quickly. Those are 4 pcbs. 78xx , 79xx and adjustable lm317 , lm337 schematic and pcbs. Size of the pcb is 35nn x 57mm. Coupling and decoupling capacitors are very important,especially if you design circuits with micro controllers or circuits with small signals.
Download pcb 78xx ground plane