What you will need:
Green Tights, Long Green T-Shirt you don't mind cutting into!; Large Brown Belt, Green Felt and a Red Feather. Bonus if you can find a Pan Flute or small dagger anywhere!
With the T-Shirt take a sharpie and draw on the bottom of the shirt and the sleeve caps a zig zag or leaf pattern. Cut around it, or if you have a serger it looks really neat to use a darker green thread as an outline to trim.
With the Green felt you can make a hat with it. Lay it diagonally, bring to sides to the back and staple them together. Bring the remaining back piece down and staple or hot glue it. Fill in the gaps with a little more felt, and then attach a red feather.
Best of luck, I'll look online for you to see if I can't find some more ideas. Best I can do sans caffeine!