1)we first create the circuit in the workspace of esim after which we check for any errors in the circuit
2)if everything is ok we save it and we convert the circuit from kicad to ngspice(if there are any sub-circuits we add then in the respective console)
  and check the box weather we need ac/dc/transient analysis and we sucessuflly complete it
3)then we move to the folder where our netlist of the circuit is and we replaces the models of cmos with skywater130nm and few changes for simulation purpose
 and we have to modify the library where our sky130 model are there by (.lib "sky130_fd_pr/models/sky130.lib.spice" tt)
4)one should be careful that the .cir file should be present in the folder where sky130_fd_pr folder is present and we simulate it we get the results 
and next step is layout design


