Magento module admin from.php

Reservation: is module
1) you can make new form 

$form = new Varien_Data_Form();


$fieldsetDesignImage = $form->addFieldset("designimage_form");


2) If Any Nots  as well HTML can you write
Location: " app/code/local/Mpb/Reservation/Block/Adminhtml/Reservation/Edit/Tab"

$table="design";
$fieldset->addField('note', 'note', array(
'label' => Mage::helper('reservation')->__('test'),
'text' => Mage::helper('reservation')->__($table),
));
3) you can add textarea with editor

$fieldset->addField("comments", "textarea", array(
"label" => Mage::helper("managedesign")->__("Comments"),
"name" => "comments",
"wysiwyg" => true,
));
4) add Link type in grid.php

 $this->addColumn('Download', array(
            'header'    => "Download Artwork",
            'index'     => 'Download Artwork',
            'type'      => 'link',
            'align'     => 'center',
           'renderer'  => 'managedesign/adminhtml_managedesign_renderer_Doenloadlink'
));