Back To Basics
Standing 3 is faster than flash's b2 and reaches just as far. 3~cards or 3~tele or 3~mb kicks. React to dashes with standing 3. Don't be afraid of the neutral.
If you're feeling pressured, jump back levi helps bait stuff out which you can whiff punish with divekick/j1/j2. Jumping in on flash is risky because his d2 is good, but Flash shouldn't be able to jump in on you either (your d2 should win and failing that ji1 air to air).
Try and slip into trait when you can since your +projectiles create some neat frame traps. Also, bait out the lightning charge and punish by either ducking the MB or by lightning cage. Flash will try and bait out lightning cage, but you can trick him by just using projectiles or 2~low spark or 2~tele or 1/2~df3.
I feel this is 5-5.
That feel when you get tagged and think it's to address your post, but it's not .
At least a cute Aussie boy acknowledged me though (but not on purpose lol ;____; ).