In order for pagination to work, you must get the current page number and include that in the query that retrieves the posts, similar to this:
// Get the current page
$paged = (get_query_var('paged')) ? get_query_var('paged') :
((get_query_var('page')) ? get_query_var('page') : 1);
// Include it in the query arguments
$args = array(
'posts_per_page' => 10,
'paged' => $paged,
// All your other query args here
);
$myquery = new WP_Query($args);
Then you display the links using either a plugin like WP PageNavi, or the WP functions next_posts_link() and previous_posts_link().