Ttdfjt

I have this code

code on /app/etc/modules/Custom_Restapi.xml

<?xml version="1.0"?>
<config>
<modules>
 <Custom_Restapi>
 <active>true</active>
 <codePool>local</codePool>
 <depends>
 Mage_Api2
 </depends>
 </Custom_Restapi>
</modules>

code on app/code/local/Custom/Restapi/etc/api2.xml

<?xml version="1.0"?>
<config>
<api2>
 <resource_groups>
 <custom_restapi translate="title" module="Custom_Restapi">
 <title>Custom Rest API</title>
 <sort_order>10</sort_order>
 </custom_restapi>
 </resource_groups>
 <resources>
 <custom_restapi translate="title" module="Custom_Restapi">
 <group>custom_restapi</group>
 <model>custom_restapi/api2_restapi</model>
 <title>Testing My Rest API</title>
 <sort_order>10</sort_order>
 <privileges>
 <guest>
 <create>1</create>
 </guest>
 </privileges>
 <attributes translate="firstname lastname email password" module="Custom_Restapi">
 <firstname>First Name</firstname>
 <lastname>Last Name</lastname>
 <email>Email</email>
 <password>Password</password>
 </attributes>
 <routes>
 <route_entity>
 <route>/customer/:id</route>
 <action_type>entity</action_type>
 </route_entity>
 <route_collection>
 <route>/customer</route>
 <action_type>collection</action_type>
 </route_collection>
 </routes>
 <versions>1</versions>
 </custom_restapi>
 </resources>
</api2>

code on code on app/code/local/Custom/Restapi/etc/api2.xml

<config>
<modules>
 <Custom_Restapi>
 <version>0.1.0</version>
 </Custom_Restapi>
</modules>
<global>
 <models>
 <custom_restapi>
 <class>Custom_Restapi_Model</class>
 </custom_restapi>
 </models>
</global>

code on app/code/local/Custom/Restapi/Model/Api2/Restapi/Rest/Guest/V1.php

 class Custom_Restapi_Model_Api2_Restapi_Rest_Guest_V1 extends 
 Custom_Restapi_Model_Api2_Restapi
 

/**
 * Create a customer
 * @return array
 */

public function _create(array $data) 

 var_dump('tested');
 exit;

code on app/code/local/Custom/Restapi/Model/Api2/Restapi.php

class Custom_Restapi_Model_Api2_Restapi extends Mage_Api2_Model_Resource

but i have this error all time

My structure

please tell me how to display my var_dump, why all time 404?

And if I want to add another controller, what do I need to do for this?

and how give permission on this resource in the admin area ?