First mini I’ve ever painted!

Hi! I’m fairly new to warhammer as a whole! This is the first mini I’ve painted and wanted to ask for any tips or how I could improve my paint skills?? I’m far from done with all the detail work and such but I also have one more question! He’s holding a little alien looking guy and I have no idea what it is or how to paint it? Can anyone help me out in that one too?? Thank you!! (sorry for the bad pictures, my phone won’t focus on it every good)