Clear Text over Image

Question

Hi, In below image, you can see that I have placed a text over the image but the text is not clear although I used a Shadow

How can I make it clear like this:

Here is my XAML:

<Border Margin="10,5,10,10" Padding="0" BackgroundColor="Black" HeightRequest="200">
<Border.StrokeShape>
    <RoundRectangle CornerRadius="20" StrokeThickness="0" />
</Border.StrokeShape>
    <Grid ColumnSpacing="0" RowSpacing="0">
        <Image Source="https://elireview.com/wp-content/uploads/2016/12/reed-profile-square.jpg" Aspect="AspectFill" />

        <Label Text="{Binding nickname_and_age}" Margin="10" TextColor="#ffffff" FontAttributes="Bold" FontSize="Medium" VerticalOptions="End">
        <Label.Shadow>
            <Shadow Brush="Black" Offset="20,20" Radius="30" Opacity="0.8" />
        </Label.Shadow>
        </Label>
    </Grid>
</Border>