Not looking forward to Izumi, will be a long process as i work quite alot but a bit at a time, my screenshots will show you when i played too.
Since i already defeated izumi a few times,here is some quick pointers:
-Dont get too fancy with her, what worked best for me was the 3 kick combination. And this is from someone that loves the more complicated moves from the game but with her simple is best
-She isnt great at guarding against punches since she will get on the defensive and will usually just eat up the last punches of any combination you throw at her,so spamming those can be good.
-As you finish the combination many times she will go for her killer grab so id recommend gaining a little bit of distance then going in again.
-when she misses a few blows go to her side and go for a heavy kick like a windwill kick to tank some extra damage
-Keep up the high pace since she can take a fair ammount of damage and recovers quickly/gains distance on you also quickly
-DO Learn the counter to her killer move,get good at it,since that move steals half of your health and she goes for it a lot
-Save up some money before going in since retrys are expensive
Also eileen is good practice beforehand,but i would say a few extra spars with jasmin before leading up to the fight with her is also a good idea.