Spawn Images on certain position Xamarin Forms - image

Question

Hello Xamarin community!
I just started with Xamarin Forms and wanted to create a simple app, which helps counting on a card game.
The points should be visualized in this image and should look like the following one:
In the first row there should be a horizontal line every fifth line and on the second line there should be a horizontal line every second line.
Here is how it looks like when i manually add the lines and add a backgroundcolor for visualization:
Here is the View:
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" />
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="2*" />
<RowDefinition Height="*" />
<RowDefinition Height="8*" />
<RowDefinition Height="8*" />
<RowDefinition Height="8*" />
<RowDefinition Height="*" />
<RowDefinition Height="4*" />
<RowDefinition Height="4*" />
</Grid.RowDefinitions>
<Entry Text="{Binding Team1.Name}" Grid.Column="0" Grid.Row="0" />
<Label Text="150" Grid.Column="0" Grid.Row="1" />
<Entry Text="{Binding Team2.Name}" Grid.Column="1" Grid.Row="0" />
<Label Text="129" Grid.Column="1" Grid.Row="1" />
<Image Source="Schlange.png"
Aspect="Fill"
BackgroundColor="#"
Grid.ColumnSpan="2"
Grid.Row="2"
Grid.RowSpan="3" />
<Image Scale="0.5" BackgroundColor="Gray" Source="Strich1.png" Grid.Column="0" Grid.Row="2" Margin="0,0,0,0"/>
<Image BackgroundColor="Blue" Source="Strich1.png"/>
<Button BackgroundColor="Transparent" Grid.Column="0" Grid.Row="2" />
<Button BackgroundColor="Transparent" Grid.Column="0" Grid.Row="3" />
<Button BackgroundColor="Transparent" Grid.Column="0" Grid.Row="4" />
<Button BackgroundColor="Transparent" Grid.Column="1" Grid.Row="2" />
<Button BackgroundColor="Transparent" Grid.Column="1" Grid.Row="3" />
<Button BackgroundColor="Transparent" Grid.Column="1" Grid.Row="4" />
<Label Text="1" Grid.Column="0" Grid.Row="5"></Label>
<Label Text="-1" Grid.Column="1" Grid.Row="5"></Label>
<Entry Grid.Column="0" Grid.Row="6"></Entry>
<Entry Grid.Column="1" Grid.Row="6"></Entry>
<Button Text="Runde!" Grid.Row="7" Grid.ColumnSpan="2" />
</Grid>
My Question would be how to spawn Images on certain positions? Is this even possible with a grid? What happens to mobile phones with different resolution?
Thanks in advance and don't hesitate to ask if needed.