To the OP. There's a lot of people playing with you in this thread. This forum has changed quite a bit as it used to be full of helpful people now they have moved on all the 'newbies' just want to tear each other apart. As you are 13 and probably have no idea where to start (like anyone else starting out) here's a few pointers.
Take it from me as a pro designer:
Think about what you want to say with your logo and simplify.
Bamboo Design?
Use words linked to bamboo to help create an image to ultimately create a symbol/logo.
Pandas
Bamboo
Strength
Flexibility
Green
If nothing stands out link these words with something else.
Pandas = Black and White
Strength = Triangles
Flexibility = Curves
Green (self explanatory)
Just from these few words You already have a few shapes and colours to begin with.
Also use a simple font and avoid using 'quirky' fonts like Papyrus, Comic Sans etc.
Start with a pen and paper, come up with a few ideas. Refine them and only then take them to a computer to produce them.
Always create symbols/logos in black and white to begin with only add colour when you have cracked the layout.
If you intend to use the logo small at some point think about what the logo will look like when produce very small. Avoid thin lines and elements set close to each other as these will disappear and merge respectively.
Go
here and click on LogoBox in bottom right for some ideas.