Good day all, I have a form like the one shown below:

Code:
<form action="" method="post" enctype="multipart/form-data" id="form">
        <h3>Ask </h3>
        <p></p>
            <div>
            <p><label for="id_title">Topic</label>:<p>
            <p><input id="id_title" type="text" name="title" maxlength="300" /><p>
            </div>
            <div>
            <p><label for="id_pic">Picture</label>:<p>
            <p><input type="file" name="pic" id="id_pic" /><p>
            <p><button type="button">Add more pictures</button></p>
            </div>
            <div>
            <p><label for="id_pic_1">Picture 1</label>:<p>
            <p><input type="file" name="pic_1" id="id_pic_1" /><p>
            </div>
            <div>
            <p><label for="id_pic_2">Picture 2</label>:<p>
            <p><input type="file" name="pic_2" id="id_pic_2" /><p>
            </div>
            <div>
            <p><label for="id_pic_3">Picture 3</label>:<p>
            <p><input type="file" name="pic_3" id="id_pic_3" /><p>
            </div>
            <div>
            <p><label for="id_pic_4">Picture 4</label>:<p>
            <p><input type="file" name="pic_4" id="id_pic_4" /><p>
            </div>
            <div>
            <p><label for="id_description">Details</label>:<p>
            <p><textarea id="id_description" rows="10" cols="40" name="description"></textarea><p>
            </div>
            <button type="button" id="add-more">Add more pictures</button>
            <button type="submit">Submit</button>
        </form>
What I intend achieving is that when add more picture is pressed, new input element will be displayed one after the other each time the button is pressed. Somebody proffered this solution below but the issue I'm having with it is that instead of displaying the input element one after the other, it shows the 4 hidden fields at once. Please I need help.

Code:
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<script>
$(document).ready(function() {
    // Hide the additional photo uploads
    var $additionals = $("#id_pic_1, #id_pic_2, #id_pic_3, #id_pic_4");
    $additionals.hide();
    // Show more photo uploaders when we click 
    $("#add-more").on("click", function() {
        $additionals.show();
    });
});
</script>