Android: Increasing size of table layout on screen

Within my Activity ( a game) I am displaying a Table layout that is comprised of 16 different 16 turned over card images. (See screen shot below) I would like to increase the size of this on screen because at present it isn't big enough.

How can I adjust my XML Layout do ensure it takes up more of the screen?

Current Screen:

XML Layout:

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://ift.tt/nIICcg"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:padding="15dp" 
    android:background="@drawable/menubackground">

<TableLayout 
    android:id="@+id/TableLayout03"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content" >

    <TableRow
        android:id="@+id/TableRow04"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:gravity="center" >

        <Spinner
            android:id="@+id/Spinner01"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1" >
        </Spinner>
    </TableRow>

    <TableRow
        android:id="@+id/TableRow05"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" >

        <TextView
            android:id="@+id/tv1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:paddingLeft="10sp" >
        </TextView>
    </TableRow>

    <TableRow
        android:id="@+id/TableRow02"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:gravity="center" >

    </TableRow>

    <TableRow
        android:id="@+id/TableRow03"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:gravity="center" >

        <LinearLayout
            android:id="@+id/LinearLayout01"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:gravity="center" >

            <ImageView
                android:id="@+id/ImageView01"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="center"
                android:background="@drawable/appicon" >
            </ImageView>
        </LinearLayout>

    </TableRow>

</TableLayout>

<RelativeLayout 
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >


<TextView
        android:id="@+id/tvSeeMeditationMemory"
        android:layout_centerHorizontal="true"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text=" "
        android:layout_marginTop="25dp"
        android:layout_gravity="center"
        android:textSize="25dp" 
        android:paddingBottom="3dp"/>

     <TextView
        android:id="@+id/tvSeeAttentionMemory"
        android:layout_centerHorizontal="true"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="6dp"
        android:text=" "
        android:layout_below="@+id/tvSeeMeditationMemory"
        android:textSize="25dp" />
    </RelativeLayout> 

</LinearLayout>