ive been playing for a while but now its becoming bothersome how do i send CoD trades????

You use the little envelope with the arrow which shows at the bottom of your Inventory page. Click the item, click the envelope, enter the recipients name and how much you want to "charge" (COD Fee) and click Send item.

Here's how to do that:

1) Find a magic mushroom in the world map
2) Go to your inventory
3) Click the mushroom
4) Look at the icons at the bottom. One of them will look like this:

5) Click it
6) Paste the Username of the recipient
7) In the box that says 'CoD Fee' put in the amount they have to pay
8) Click send