non-rectangular window

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C#

i have this non rectangular window (spline-shaped) :

using System;
using System.Windows.Forms;
using System.Drawing;
using System.Drawing.Drawing2D;

namespace Guitar
{
    class GuitarForm : Form
    {
        Bitmap bmp;
        GuitarForm()
        {
            
          //  this.FormBorderStyle = FormBorderStyle.None; 
            bmp = new Bitmap("C:\\ok.jpg");
            GraphicsPath gp = new GraphicsPath();

           
            Point[] curves = new Point[]{
new Point(93,99), new Point(200, 55),
new Point(328, 128),new Point(450,100),new Point(560,200),
};
            gp.AddCurve(curves);
            gp.AddLine(560,200, 560, 500);
            gp.AddLine(560, 500, 93, 500);
            gp.AddLine(93, 500, 93, 99);
            gp.CloseFigure();




            this.Region = new Region(gp);
        }

        protected override void OnPaint(PaintEventArgs ea)
        {
            base.OnPaint(ea);
            Graphics g = ea.Graphics;
            g.DrawImage(bmp, new Point(0, 0));
            Rectangle scaled = new Rectangle(20, 20, 60, 60);
            g.DrawImage(bmp,scaled);
            g.DrawRectangle(Pens.Red, scaled);
            Point[] pGram = new Point[]{
new Point(50, 10),
new Point(100, 30),
new Point(20, 100),
};
            g.DrawImage(bmp, pGram);
        }


        public static void Main()
        {
            Application.Run(new GuitarForm());
        }

    
        private void InitializeComponent()
        {
            this.SuspendLayout();
            // 
            // GuitarForm
            // 
            this.ClientSize = new System.Drawing.Size(560, 560);
            this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.None;
            this.Name = "GuitarForm";
            this.ResumeLayout(false);

        }
      
    }///:~
}

the problem is that when i run it, only one part of the window appears and i have to drag to brders in order to see the whole shape . Is there any way it can run all-ready sized the way i want it ?