Hello mate!
The normal android phone installs apps into internal memory. You cant make your phone to instal your apps directly into your SD card (with normal Android phone). You must clean your trash (adds/cash and etc...) and thansfer every app one by one from your Internal memory to your SD memory. You may use some apps for that ( CleanMaster for cleaning and Filemanager for transfering data).
Regards,
GeRgY