you can't really get rid of creases. make sure you arent sliding across your seat when you get in and out. i normally life myself in and out using the stearing wheel and the bottom door sill/side skirt area, if you understand that ha
to clean i would suggest using every lexol
cleaner every 1-2 weeks. Make sure to agitate with a soft boars hair brush and scrub it in while the seats are warm.
Once every year, use leatherique pristine
clean and rejuvenator
to deep clean condition