Saving a planet

Hey guys! i drew this piece last year. it was the first concept done for an ad for the WWF (world wildlife fund) to educate people about global warming.My partner and i decided to go with another concept. anyway long story short, me and my buddies at wrok have a rule where an individual has to draw something for every Friday , or else they have to pay a fine of 5 bucks. any thing from WIPs to finished pieces are accepted .this past friday we decided to up the stakes because my buddy just got a new tablet, he hast has to do any thing and i have to bring in a coloured piece otherwise the fine is R20. today is Sunday, here is my piece. this took round about 3 hours. enjoy.

all crits and comments are welcome.

Pencil sketch + Genius M609 Tablet + Photoshop CS2