Skele Mage in need of diraction

any pro skele mage can look at my pob and tell me what should i improve or get next? :/
got 15 ex saved already but no idea what to do 😦

generaly i wanna manage to run uber shaper clean with no more then 2-3 deaths max
how to get there is a diff story :/

https://pastebin.com/9YuX6VMV