Sorry...I'll be blunt: not a great M83.
Resolution is very average: the core is mushy and the bell-weather binary pair at 2 o'clock (in your image) on the galaxy's limb is not cleanly resolved.
Colours are all over the shop...brownish h-alpha regions, pastel colours that look posterized.
You have some absolutely superb skies and kit to go with them!... hence there is no reason to assume the excellent results that can follow...so stick with it
Suggest you have a gander at some professional and top-shelf amateur images of this well imaged galaxy to help steer your processing in the right direction.