That is an AWESOME improvement!! It makes me smile so much to see things like this and how people have progressed with their work over time. Persistence and the love of art can create some amazing results. ^^ Keep up the amazing work!! I might partake in this if its not too late, it looks like fun!
You improved your style and colouring techniques very well! The shades and the light is for my liking a bit to much, but anyhow-the ambiance seems very calming and idyllic I wish you the best for this competition- And keep on drawing!