How to add a badge to a tabpage in a tabcontrol

Question

I need to add a badge to a tab control at the top right corner. I have tried this and came up with this class

public class BadgeUtil
{
    private static List<Control> controls = new List<Control>();

    static public bool AddBadgeTo(Control ctl, string Text,int y,int x)
    {
        if (controls.Contains(ctl)) return false;

        Badge badge = new Badge();
       // badge.AutoSize = true;
        badge.Size = new Size(20, 20);
        badge.Text = Text;
        badge.BackColor = Color.FromA#ff8040;
        controls.Add(ctl);
        ctl.Controls.Add(badge);
        SetPosition(badge, ctl,x,y);

        return true;
    }
    static private void SetPosition(Badge badge, Control ctl,int x,int y)
    {
        badge.Location = new Point(x,
                                   y);
    }
    class Badge : Label
    {
        Color BackColor = Color.SkyBlue;
        Color ForeColor = Color.White;
        Font font = new Font("Sans Serif", 9f);

        public Action<Control> ClickEvent;

        public Badge() { }

        protected override void OnPaint(PaintEventArgs e)
        {
            e.Graphics.FillEllipse(new SolidBrush(Color.FromA#ff0000),
                this.ClientRectangle);
            e.Graphics.DrawString(Text, font, new SolidBrush(ForeColor), 3, 1);
        }

        protected override void OnClick(EventArgs e)
        {
            ClickEvent(this);
        }
    }
}

and used this way

BadgeUtil.AddBadgeTo(tabPage3, "3",0,120);

which is resulting to this un desired output. I would like my badge to be position on the blue circle of the tab control as shown in this image not where the badge is positioned.