you need to improve your wisdom so to get less cooldowns more son of wind chance.
you also need to improve alot the skills that remove stun and debuffs and slow. Aegis shiled and balistic 4/3 with runes.
Blood wind is based on his ability to debuff, imobilize and kill the enemy fast. Brawl does the same only with less crowd control. Bbrawl Nyos gives you imunne to stun slinece etc. also.
If you dont have power to kill fast then you need to be based in assist role stunnuing and slowing from distance alot of players.
Also bloodwind is speedy use speed to get wrath orbs fast while your oponents are slowed.
To be a good bloodwind pvper you need to improve your dodge and cdef along with resi alot. Till then use your ability to move and stun to survive .
True blood mail rune can help alot a bwind like you to be decent fighter