add multiple panels into a form

hi I'm trying to create a list that contains my customised Panel called MyPanel, and add the panels in the list to my from. however it seems like when Form1 load, the form is actually showing 1 panel instead of 10 panels in total. here is my code:

private void Form1_Load(object sender, EventArgs e)
        {
            List<MyPanel> tenPanels = new List<MyPanel>(); 
            for(int i=0;i<10;i++)
            {
                MyPanel mp = new MyPanel();
                tenPanels.Add(mp);
                mp.Name = "digitPanel" + i;
                mp.Location = new System.Drawing.Point(10+i, 32);
                mp.Size = new System.Drawing.Size(147, 173);
                this.Controls.Add(mp);
            }
            foreach(Panel p in tenPanels)
            {
                this.Controls.Add(p);
            }
        }

Form1_Load is visual studio automatically generated event