SD card

Hello,
My name is Michael and have been trying to partion my sdcard. No luck yet. These are screen shots of what I got and did.
What I am try to do is , when I download an app, I want it to go straight onto the removable SD card. I know it is possible. I can't figure out what I am doing wrong. I have also asked at XDA,Android central and others. If someone could tell me what to from scratch ,because I already know that I need to wipe the card and back up and restore the phone.
Please help.