Learning with the left hand

I've been practicing backgrounds recently by doing them with my left hand, so far I've been really enjoying it! I'm hoping that eventually I can do the backgrounds for my comic with my left hand and the characters with my right.

I'm moving back to the UK in a fortnight and I'm packing up all of my old sketchbooks from VFS so I keep finding all these old assignments I did. There's a few that actually hold up so I might upload some!
This was for a composition homework based off light and values. I couldn't make up my mind what to do so I chose three random ideas on my brainstorm page and mixed them together. Pencil on paper.