Thanks for the feedback! Probably should've mentioned it too, but I've been composing using the Arturia synthesizer and an expression pedal(I think it was called Boss something) that lets you control the volume of the instrument as you press a key on the keyboard.
I mainly play piano (a bit of saxophone, violin and electric guitar) and I use a console digital piano to perform those parts. As for everything else, I try to control the dynamics with the expression pedal, if that's considered a midi controller.
I'll definitely read more into your advice!