Точка создается не в том месте, где надо на форме

private void Form1_MouseDown(object sender, MouseEventArgs e)
        {
            SolidBrush blueBrush = new SolidBrush(Color.Blue);
            // Create points for curve.
            Graphics u = this.CreateGraphics();
            int CursorX = Cursor.Position.X;
            int CursorY = Cursor.Position.Y;
            Rectangle rect = new Rectangle(CursorX, CursorY, 2, 2);
        
 
            u.FillRectangle(blueBrush, rect);
        }

private void Form1_MouseDown(object sender, MouseEventArgs e)
{
    SolidBrush blueBrush = new SolidBrush(Color.Blue);
    // Create points for curve.
    Graphics u = this.CreateGraphics();
    Rectangle rect = new Rectangle(e.X, e.Y, 5, 5);
        
 
    u.FillRectangle(blueBrush, rect);
}

List<Point> points = new List<Point>();
 
private void Form1_MouseDown(object sender, MouseEventArgs e)
{
    points.Add(new Point(e.X, e.Y));
    this.Invalidate();
}
 
private void Form1_Paint(object sender, PaintEventArgs e)
{
    foreach(Point point in points)
        e.Graphics.FillRectangle(Brushes.Blue, point.X, point.Y, 2, 2);
}