Parva ,master of size magics

im not good at lore or numbers and if people could help me out with that since this is my first champion concept ever(btw the word parva which is latin for small)parva is a yordle

smalldetails: she is ranged(550 auto range) primary:supp secondary:mage lore:cauzen(sorry if i misspell that)of lulu

passive:Enlarging Magics parvas spells enlarge allies increasing there model size slightly while also giving lvl 1:5 mr and armor lvl 11:10 mr and armor lvl 16:15 mr and armor

Q:dust of big feet parva enchants an ally or curses an enemy ally:gains bonus 5%/10%/15%/20%/25% movespeed and there big feet stomp enemies around them dealing 20/30/40/50/60(15% ap ratio) enemy:an enemies big feet slow them down for 5%/10%/15%/20%/25% and deal 20/30/40/50/60(15% ap ratio)

stomp size is same as sunfire cape
cast range is the same as janna's shield

W:SHRINK blast (won't decrease model size of enemy yordles or fizz) parva blasts in a line with shrinking magics applying half her passive as mr and armour reduction dealing 60/100/140/180/220(40% ap ratio) magic dmg and reduces enemy model size slightly

E:Unstable Dust passive:increase size of dust based abilities by 5/10/15/20/25(buffs stomp area of Q)

active:Throws her dust in an aoe which lingers for 3 seconds enemies that are in the aoe when the ability lands are applied a curse enemies that walk out(or stay until the durations ends) are applied a lesser curse allies are enchanted curse:Does 80/130/180/230/280 (25%ap ratio) magic dmg over 3 sec lesser curse:slows for 10% enchant:allies gain a 50/90/130/170/210(30%ap ratio) shield

(help me with the aoe size forE)

R:enlarge an ally (can be cast on self) and they gain double effects of passive shield from unstable dust stomp effect of Q with a dealing double dmg with a 30% ap ratio while carrying the shrinking storm shrinking storm:enemies are blasted by a shrinking storm applying a 10%/20%/30% slow and dealing 100/200/300(50% ap ratio)magic dmg enemies can only be damaged once by shrinking storm but the slow will constantly reapply to enemies

thanks for your time leave suggestions and i do appreciate if you do leave some as I'm open to some new ability ideas to