two errors - need help

trying to display image from database. last image to 1st.

but getting error:
Warning: mysql_query() expects parameter 1 to be string, resource given in C:\xampp\htdocs\a_upload\gallery.php on line 12
Warning: mysql_fetch_assoc() expects parameter 1 to be resource, null given in C:\xampp\htdocs\a_upload\gallery.php on line 26

    $sql = mysql_query("SELECT * FROM image WHERE user_id = $id");
    $result = mysql_query($sql); //get access to image table



while($row = mysql_fetch_assoc($result))
                        {
                            echo"<td> ";
                                    $image_db = $row['image'];
                                    $src = "data:image/gif;base64," . $image_db;
                                    echo" <img src=\"$src\" width='130px' height='130px' class='image_p' />";
                            echo"</td>";
                                    $count++;
                                    if($count == 5)       //5 rows
                                    {
                                        echo "</tr><tr>"; // Start a new row at 6 cells
                                        $count = 0;
                                    }
                            }