Letter in a used milk can

Hello, When you receive this letter, which I stored in a used milk can, please hand it to the one it is intended for, my mother. Of course, I know I shouldn’t really throw used milk cans into the ocean. Maybe sometime later, you can come by my house – I wrote the address on the back of the can – so you can tell me that you handed the letter to my mother, and that you disposed of the can in the proper place, because according to Bu Salimah, my teacher, waste tins will pollute the ocean and make fish sick. Please forgive me, but I so want to talk to my mother and I don’t know how else to send her this letter. Okay, you can have a look at it, for I am pretty certain that – in the end – you will be the one handing it to my mother.