Wordpress: Create a new usermeta field for users

How do I create a new usermeta field with a drop down selection values?

Im want to create a conditional statement for all users with a certain value of the new custom field I want.

For example,

The new field would be: Approved The drop down values are: Yes and No

The conditional statement will recognize all users with the Approved field value of Yes. Then it will post a code.

Im working with the wp_get_current_user function(), which does exactly what I need, but I just need a new custom usermeta field. In the example the new usermeta field would be "artwork_approved."

Example:

wp_get_current_user();
if ($current_user->artwork_approved == 'Yes'){
    echo 'Thank you for approving your artwork!';
}

There seems to be no plugin for this and I really need this feature. I would really appreciate some advice on creating a new usermeta with drop down options.

*UPDATE:

I used the Register Plus Redux to create a new usermeta field, called "Artwork Approved." I made it a drop down option, with options "No" and "Yes." The No option is set as default.

This created the "Artwork Approved" usermeta field. I manage user accounts and choose either Yes or No. Now with this new usermeta field, Im using a function that should check if the current user has the Artwork Approved with value of Yes. Then it is supposed show a certain code.

Here is the if statement Im using with the new usermeta field:

<?php global $current_user; get_currentuserinfo(); if ($current_user->artwork_approved == 'Yes') { ?>

echo 'Your artwork is approved';

<?php } else { ?>         

echo 'Your artwork is not approved';

<?php } ?> 

But what's happening is it's not recognizing the first part of the if statement. If I log into any account with the artwork approved, the if statement only shows the "else" part even if