Hi Futron, I also just made my first guide, it's a Taka guide please check it out and comment!
Anyway, I like to use Koshka more as a sudden burst damage distractor. So I would replace the Clockwork for a shatter glass instead. I'll try out your version though. Clockwork seems to enable Koshka to use her ULT as a support more often.

No offense but this sort of reminds of the Koshka used in Vainglory Worlds. I would prioritize more crystal in the beginning because she is so powerful early game unless you are against someone that counters you well. Also, you should go with your strengths. Most people know the basics of roaming but aren't actually really good at it so I think more roa- I mean CAPTAIN guides would be perfect, especially for newer players.

Sup guys this is my first ever guide so it's kinda bad so deal with it :) I'm a roamer so this guide may not be that good but when I jungle I use assassin class heroes and koshka is one of my favourites and I have no interest in make a roam guide due to the items being the same for all Roamers I may do one soon