StabilityMatrix/StabilityMatrix.Avalonia/Controls/SelectableImageCard/SelectableImageButton.axaml

<Styles xmlns="https://github.com/avaloniaui"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:selectableImageCard="clr-namespace:StabilityMatrix.Avalonia.Controls.SelectableImageCard"
        xmlns:controls="clr-namespace:StabilityMatrix.Avalonia.Controls">
    <Design.PreviewWith>
        <Border Padding="20">
            <!-- Add Controls for Previewer Here -->
            <selectableImageCard:SelectableImageButton 
                Source="https://image.civitai.com/xG1nkqKTMzGDvpLrqFT7WA/78fd2a0a-42b6-42b0-9815-81cb11bb3d05/00009-2423234823.jpeg" />
        </Border>
    </Design.PreviewWith>

    <!-- Add Styles Here -->
    <Style Selector="selectableImageCard|SelectableImageButton">
        <Setter Property="Template">
            <ControlTemplate>
                <Grid
                    Width="{Binding ImageWidth, RelativeSource={RelativeSource TemplatedParent}, Mode=TwoWay}"
                    Height="{Binding ImageHeight, RelativeSource={RelativeSource TemplatedParent}, Mode=TwoWay}">
                    <CheckBox VerticalAlignment="Top"
                              HorizontalAlignment="Right"
                              Margin="14,8"
                              Padding="0"
                              IsChecked="{Binding IsSelected, RelativeSource={RelativeSource TemplatedParent}, Mode=TwoWay}"
                              ZIndex="100">
                        <CheckBox.RenderTransform>
                            <ScaleTransform ScaleX="1.5" ScaleY="1.5" />
                        </CheckBox.RenderTransform>
                        <CheckBox.Styles>
                            <Style Selector="CheckBox">
                                <Setter Property="CornerRadius" Value="16" />
                            </Style>
                        </CheckBox.Styles>
                    </CheckBox>
                    <Button
                        Margin="0"
                        Padding="4"
                        CornerRadius="12"
                        Command="{TemplateBinding Command}"
                        CommandParameter="{TemplateBinding CommandParameter}">
                        <controls:BetterAdvancedImage
                            Stretch="UniformToFill"
                            CornerRadius="8"
                            ContextFlyout="{TemplateBinding ContextFlyout}"
                            Source="{TemplateBinding Source}" />
                    </Button>
                </Grid>
            </ControlTemplate>
        </Setter>
    </Style>
</Styles>