Using layer-list to display some drawable images

Update your layer-list as follows

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">

    <item>
        <shape>
            <gradient
                android:centerX="0.5"
                android:centerY="0.1"
                android:endColor="#08e25b"
                android:gradientRadius="300dp"
                android:startColor="#b7e9c9"
                android:type="radial" />
        </shape>
    </item>
    <item
        android:width="48dp"
        android:height="48dp"
        android:bottom="68dp"
        android:right="-20dp">
        <bitmap
            android:gravity="bottom|right"
            android:src="@drawable/peas" />
    </item>
    <item
        android:width="68dp"
        android:height="68dp"
        android:bottom="-20dp"
        android:left="-20dp">
        <bitmap
            android:gravity="bottom|left"
            android:src="@drawable/peas" />
    </item>
</layer-list>