function CustomOrderForm(){

         $fields = new FieldList (
             FieldGroup::create(
                FileField::create('File', 'Upload File'),
                DropdownField::create('PrintSize', 'Print Size', array(
                    'Small' => 'Small',
                    'Medium' => 'Medium',
                    'Large' => 'Large'
                )),
                DropdownField::create('PrintColor', 'Print Color', array(
                    'Red' => 'Red',
                    'White' => 'White',
                    'Blue' => 'Blue'
                )),
                DropdownField::create('PrintMaterial', 'Print Material', array(
                    'A' => 'A',
                    'B' => 'B'
                ))
            )->setTitle('Print Details')->addExtraClass('order-form__block pos-1'),
            FieldGroup::create(
                TextField::create('FirstName'),
                TextField::create('LastName'),
                TextField::create('Telephone'),
                TextField::create('Email')
            )->setTitle('Personal Information')->addExtraClass('order-form__block pos-2'),
            FieldGroup::create(
                TextField::create('AddressLineOne','Address Line One'),
                TextField::create('AddressLineTwo','Address Line Two'),
                TextField::create('PostCode','Post Code'),
                TextareaField::create('Message', 'Additional print notes (if necesary)'),
                HiddenField::create('OrderID')->setValue( $this->generateRandomString())
            )->setTitle('Delivery Information')->addExtraClass('order-form__block--last pos-3')
        );

        $actions = FieldList::create(
            FormAction::create('doCustomOrder', 'Complete Order')
                ->addExtraClass('order-submit')
        );

        $validator = new RequiredFields('FirstName', 'Email');

        $forms = Form::create($this, 'CustomOrderForm', $fields, $actions, $validator)
                    ->addExtraClass('order-form');

        return $forms;
    }