So in that huge project that's taking over my life and I'm planning the plot of (and characters) I'm putting in an older brother and younger sister

Since that's a cliche I wanted their personalities/overall characters to be different, so I asked my mom for advice and I ended up making vvvvvvvvVVVVV rough lists of their character traits, three strengths, three neutral and three flaws
My mom liked it but I think I need a better opinion because I'm pretty sure my first grade teaching mom would be happy if I gave her a stick with mud on it

So
Er
Can you guys help? Keep in mind that you can rOAST them and I won't mind because I am in the development stages and they can totally change just go easy

Here's the cliché (from what I know... I should look it up on tv tropes)

The older brother is super good at defending the younger sister. He's very outgoing and just... good at stuff.

The younger sister is very, very dependent on the older brother. She's typically shy and meek.

Mine:

Key:
Positive: +
Neutral: -
Negative: ⚡️
(It's a science joke about atoms)

Older brother:
+Can analyze absolutely anything in nature/science/manmade things/pretty much the world
+Really empathetic, he'll listen to your problems
+Loyal to the end. Despite being cowardly (under flaws) he'll try his best to stay strong for those he cares for.
-Efficient and practical
-Extremely protective.
-Barely ever forgets anything (seems like a strength? It's actually pretty neutral)
⚡️Cannot analyze people at all, completely helpless when it comes to socializing
⚡️Very cowardly, he'd rather spend a month inventing a machine that builds bridges than cross a slightly risky, two foot long gap
⚡️Because he's so socially oblivious, he often insults people by accident, and can sometimes seem blunt

Younger sister:
+So full of energy, innocent, silly and sweet that people tend to automatically like her (of course, she is an adorable young kid)
+Stands up for herself and others
+Accepts absolutely anyone with love and affection... unless they hurt her or her friends
-Values independence and being able to do things on her own
-Stubborn
-Obviously can get scared/intimidated, but it doesn't happen easily
⚡️Way too easily sidetracked - if she had to press a button to stop the world from ending but there was a butterfly, guess which one she'd go for?
⚡️Very impulsive
⚡️Too trusting, she'd probably betray her friends by accident!

Edit: cause I'm a weeb I went to Rinmaru and made 'em
These are probably even more changeable than the characters and really quite strange at the moment but here we go

His eyes are supposed to be hazel

Also the blush on both is supposed to be sunburn