Eureka! Now I can give you better suggestions Thanks, @yeungtina !
Okay, so I'll hit them in order:
A - I think this one is actually pretty close to perfect, though I'd tone down the light on the door and add the same subtle light to the window, and give mom some slight shading. Don't take quite as hot of a tone for the highlights on the kids though. Remember, light diffuses as it moves through a room, so it'd be slightly less intense as it hits/reflects off of them.
B - The light is very distracting on this one. I do sort of like how the kids pop a bit more, but I'd say if you're going to do it like this to push out the background, tone it down considerably.
C - Honestly, I'm not a huge fan of this one. I can't even tell you why to be honest, I think it's just that the lighting feels forced and isn't super clearly defined on the kids.
D - I think the tone of the lighting on this one is good, but I wouldn't diffuse it like this one is. Confine it to the window and door and shade the kids more similarly to how you did on option A.
E - This one is closer, but add the light to the window again and don't hit the cereal box quite so hard, it distracts from the kids. I think the way you've got the kids lit on this one is more accurate, but tone down the intensity some.
F - This one works (I'd add the darker hue back to the backpack by the counter again, that was great contrast), but I think it strays from what you wanted to do. I do like it.
So final verdict, I'd say do a combination of A, D, and E. Use the tone from E on the door and window (like in D), the shading of the kids from E ( just bring down the intensity a bit), and I think you'd be on the right track. Though I gotta say, the more I'm looking at F the more I like it lol. Just add the tone back to the backpack and that might actually be a winner lol
Hope this helped! I'm looking forward to seeing the final piece, like I said before I really like the layout and I think with some colors it'll be great!