How to specify spaces between android elements from graphical layout

I have created a layout that is showing perfect result on graphical layout, but when i launch the application is Emulator its giving very weird look.

Emulator

I have tried margin and Padding both , but still i am not getting desired output in the emulator.

The following is my xml file. Everything is wrap in relativeLayout tag

XML File

<TextView
    android:id="@+id/successMessage"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentTop="true"
    android:layout_centerHorizontal="true"
    android:layout_marginTop="14dp"
    android:gravity="center"
    android:text="Launch Complain"
    android:textAppearance="?android:attr/textAppearanceLarge"
    android:layout_marginBottom="50pt"
     />

<Button
    android:id="@+id/btnSendMessage"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentBottom="true"
    android:layout_centerHorizontal="true"
    android:layout_marginBottom="83dp"
    android:gravity="center"
    android:text="Send Message" />

<EditText
    android:id="@+id/userMessage"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_centerHorizontal="true"
    android:layout_centerVertical="true"
    android:ems="10"
    android:gravity="center"
    android:hint="Complain"
    android:inputType="textMultiLine" >

    <requestFocus />
</EditText>

<EditText
    android:id="@+id/txtShopName"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_above="@+id/userMessage"
    android:layout_alignLeft="@+id/userMessage"
    android:layout_marginBottom="46dp"
    android:ems="10"
    android:gravity="center"
    android:hint="Shop Name"
    android:inputType="textPersonName" />