How can i define and use My own Custom Button In calibrun Micro

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C#

WPF

Caliburn.Micro

Hi everyone, I have this problem for fewdays and im really tired of it, it can be great if you help me out.
I have Caliburn.Micro project. and i have View and ModelView Folder and in my View folder i have a resource Dictionary called MyButton starts with <ResourceDictionary> and then i create <Style x:Key="CircleButton" TargetType="Button">.... then i cant bind it in my MainView.Xaml i tried to bind like <button Style={StaticResource CircleButton}.../> and also i tried

<UserControl.Resources>
<ResourceDictionary Source="MyButton.xaml"/>
</UserControl.Resources>
or
with MergDictionary but it doesnt work, am i missing something ? i can be great if someone give me some sample Codes thank you.