How do I use winforms with abstract class

using System;
using System.Collections.Generic;
using System.Text;
using System.Drawing;

namespace MyMouseGame
{
        public abstract class Element
        {

        //Form1 myForm = new Form1();// not sure I need it
        public enum EnumShape { Square, Circle, Triangle }
        public enum EnumType { Chase, Escape, Random }

            //variables
            private double X { get; set; }
            private double Y { get; set; }
            private int Size { get; }
            private int Speed { get; }
            private EnumShape Shape { get; set; }
            protected EnumType Type { get; set; }

            private static Random R = new Random();

            //methods

            public int generateRandomNum()
            {
                int randomNum = R.Next(20, 100);
                return randomNum;
            }
            public Element()
            {
                X= 0;
                Y = 0;
                Shape = 0;
                Size = generateRandomNum();
                Speed = generateRandomNum();
                Type = 0;
            }

        public void ElementsFactory()
        {

        }
            public void hitTarget(e) { }
            public abstract void Draw(Form1 g); //here I tried to pass a form inside 
            public abstract void Move();

        }
}


//example of one of the instances classes of element

<pre>using System;
using System.Collections.Generic;
using System.Text;
using System.Drawing;


namespace MyMouseGame
{
    class E_Escape : Element
    {
        int move_circleX = 0;
        int move_circleY = 0;

        bool flag = false;

        Rectangle circle = new Rectangle(10, 70, 35, 35);
        Pen p = new Pen(Color.Black);

        //circle
        public E_Escape()
        {
        }
        public override void Draw(Form1 g) {
            g.DrawEllipse(p, circle);
            g.FillEllipse(new SolidBrush(Color.Red), circle);
        }

        public override void Move() {
            if (!flag)
            {
                if (circle.X >= panel1.Width - 2)
                    flag = true;
                circle.X += 10;
            }
            else
            {
                if (circle.X <= 30)
                    flag = false;
                circle.X -= 10;
            }
        }
    }
}

<pre lang="C#"><pre>using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Threading;




namespace MyMouseGame
{
    public partial class Form1 : Form
    {
        Graphics g;
        Element [] elements= new Element[3];

        public Form1()
        {
            this.DoubleBuffered = true;
            InitializeComponent();
        }

        private void panel1_Paint(object sender, PaintEventArgs e)
        {
    
            g = panel1.CreateGraphics();

            //timer set
            t.Interval = 100;
            t.Tick += new EventHandler(timer1_Tick);
            t.Start();

        }

        private void recThreadTracker()
        {
            //move rectangle
            while (true)//here I tried to call element finction draw
            {
                elements[0].Draw(g);
                elements[1].Draw(g);
                elements[2].Draw(g);
            }
        }

        public void threadCounter()
        {
            long counter = 0;
            while (true)
            {
                counter++;
                this.Invoke(new Action(() =>
                {
                    lcountRes.Text = counter.ToString();
                }));
                Thread.Sleep(1000);
            }
        }
        private void Form1_Load(object sender, EventArgs e)
        {
          
           

        }

        private void button1_Click(object sender, EventArgs e)
        {
            Thread counterThread = new Thread(threadCounter);
            counterThread.Start();
            Thread recTrackThread = new Thread(recThreadTracker);
            recTrackThread.Start();
        }

        private void timer1_Tick(object sender, EventArgs e)
        {
            foreach (Element elements in elements)
            {
                elements.Move();
            }

            //Refresh();
            Invalidate();
        }


    }
}