Kerning XAML

MainPage.xaml

<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             xmlns:local="clr-namespace:CustomKerningSample"
             xmlns:controls="clr-namespace:CustomKerningSample.Controls"
             x:Class="CustomKerningSample.MainPage">
    <StackLayout VerticalOptions="CenterAndExpand" 
                 HorizontalOptions="FillAndExpand"
                 Padding="20">

         <Picker x:Name="picker" 
                 Title="Select Kerning"
                 SelectedIndexChanged="Handle_SelectedIndexChanged">
              <Picker.ItemsSource>
                <x:Array Type="{x:Type x:Double}">
                    <x:Double>0</x:Double>
                    <x:Double>10</x:Double>
                    <x:Double>20</x:Double>
                    <x:Double>40</x:Double>
                    <x:Double>55</x:Double>
                </x:Array>
              </Picker.ItemsSource>
        </Picker>
        
        <controls:CustomLabel Text="Hello" 
                              HorizontalTextAlignment="Center"
                              HorizontalOptions="FillAndExpand"
                              x:Name="element"/>
    </StackLayout>
   

</ContentPage>