Hi, I'm new to C5 so please bear with me.

I want to create a customized block for the gallery section of a site. I read the documentation and installed the Basic Test, and have tried to modify it, to no avail.

Block requirements for gallery: "Title" (title of artwork), "Thumbnail" (picture of artwork), "Link" (arrow icon that links to URL of artwork).

add.php looks like this:

<?php echo $form->label('content', 'Title');?>
<?php echo $form->text('content', array('style' => 'width: 320px'));?>

<?php echo $form->label('content', 'Thumbnail');?>
<?php echo $form->file('content', array('style' => 'width: 320px'));?>

<?php echo $form->label('content', 'Link');?>
<?php echo $form->text('content', array('style' => 'width: 320px'));?>

edit.php looks like this:

<?php echo $form->label('content', 'Title');?>
<?php echo $form->text('content', $content, array('style' => 'width: 320px'));?>

<?php echo $form->label('content', 'Thumbnail');?>
<?php echo $form->file('content', $content, array('style' => 'width: 320px'));?>

<?php echo $form->label('content', 'Link');?>
<?php echo $form->text('content', $content, array('style' => 'width: 320px'));?>

db.xml has not been modified and looks like this:

<?xml version="1.0"?>
<schema version="0.3">
<table name="btBasicTest">
<field name="bID" type="I">
<key />
<unsigned />
</field>
<field name="content" type="X2">
</field>
</table>
</schema>

I've tried many variations to these three files, including db.xml, and also remembered to refresh the block in the database, but when I add the block within the CMS on the gallery page, enter the fields and hit save, only one of the fields shows up on the gallery page. Other variations have worse results.

Thank you so much for any help, it'll be very much appreciated. I'm sure it's something relatively simple, but as a front-end developer I'm new to PHP. Thanks again!