A small snippet for overlapping images and merging them into one. Adjust size and position of bitmap as you want

Overlay Two Images

  public Bitmap overlay(Bitmap baseBitmap, Bitmap bmp2) {
    Rect dst = new Rect();
		final   Bitmap bitmapMan = Bitmap.createBitmap(baseBitmap.getWidth(),
				baseBitmap.getHeight(), baseBitmap.getConfig());
		final Canvas canvas = new Canvas(bitmapMan);
		canvas.drawBitmap(baseBitmap, new Matrix(), null);
	
		dst.set(bitmapMan.getWidth() / 4, bitmapMan.getHeight() / 4,
				bitmapMan.getWidth() * 3 / 4, bitmapMan.getHeight() * 3 / 4);
		canvas.drawBitmap(bmp2, null, dst, null);
		return bitmapMan;
	}