Help me spend my runes

Guys just to say right away I'm a noob I beat godrick by some magic luck , so I chose the samurai and my main way of playing is shield sword , I like to dodge and hit quick and pull back , also like to block with shield and hit a counter attack , at the moment I've spent about 5 levels on health 3 on dexterity , and some on stamina , where should I invest my runes ? Thanks guys