This project is done in the course of "Advanced Physical Design using OpenLANE/Sky130" workshop by VLSI System Design Corporation. In this project, a PicoRV32a SoC is taken and then the RTL to GDSII Flow is implemented with Openlane using Skywater130nm PDK. Custom-designed standard cells with Sky130 PDK are also used in the flow. Timing Optimisations are carried out. Slack violations are removed. DRC is verified