Sure you can.Just unstaple the cover,pull it back or off,and go to it.You can grind,carve,file,add foam or totally reshape it if you plan to re-cover it.Lots of minor mods,filling,bolsters,minor hump relocations can be fitted under the stock cover.Just spray glue it back on using a foam and fabric glue [I use RP2020,and 3M 77,don`t use 3M 80 or 90 as they dissolve the foam]Restaple with an electric stapler if you want. Heres a pic of my king but no queen cafe .