XNA: Player needs to throw an object

I have made a game in XNA where there is a player and some enemies (called LittleEnemy's). I want the enemies to throw an object to where it is facing at a random time. This "ThrowAttack" is a special attack, the enemy can have one special attack at a time (I use XML where I enter the special attack that needs to be used for that specific enemy).

But I can't figure out how to create a true ThrowAttack object which is drawn and moves to the left/right of the screen (and perhaps intersects with the player which will get some damage). I also don't really know where/how to set it's texture. Preferably at .use since every enemy can have it's own texture (for the throwattack).

For now I have this:

The ThrowAttack class:

namespace Jumping.Models.Features
{
    [XmlRoot(ElementName = "ThrowAttack")]
    public class ThrowAttack : MovableObject, IAttackBehavior
    {
        private Type typeThatThrows;
        public Boolean available;
        public void Use(Type objectType)
        {
            this.typeThatThrows = objectType;
            this.Walk(Direction.Right, 2f);
        }
}

The walk function used in the above:

public void Walk(Direction direction, float speed)
        {
            if (direction == Direction.Left)
            {
                if (velocity.X > -speed)
                    velocity.X -= (1.0f / 10);
                else
                    velocity.X = -1.0f;
            }
            else if (direction == Direction.Right)
            {
                if (velocity.X < speed)
                    velocity.X += (1.0f / 10);
                else
                    velocity.X = 1.0f;
            }

            this.direction = direction;
        }

This is how I load the enemy in the xml file:

<LittleEnemy>
    <TextureName>enemy</TextureName>
    <Position>
        <X>300</X>
        <Y>900</Y>
    </Position>
    <Speed>2.0</Speed>
    <ScreenBoundWidth>
        3000
    </ScreenBoundWidth>
    <ScreenBoundHeight>
        1000
    </ScreenBoundHeight>
    <FrameWidth>60</FrameWidth>
    <FrameHeight>37</FrameHeight>
    <StrategyBehavior>curious</StrategyBehavior>
    <AttackBehavior>ThrowAttack</AttackBehavior>

</LittleEnemy>

And somewhere I finally perform the use function in the ThrowAttack class:

                   if (enemy.getAttack() != null)
                   {
                       ThrowAttack attack = ((ThrowAttack)enemy.getAttack());
                       Random random = new Random();
                       if (random.Next(0, 100) > 50 && attack.available)
                       {
                           enemy.getAttack().Use(enemy.GetType());
                       }
                       else
                       {
                           ((ThrowAttack)enemy.getAttack()).setPosition(enemy.position);
                       }
                   }