I am impressed :o.
You seem like such a great designer.
I would've never came up with such patterns.
Anyways, I have quite a few ideas to make it a little better.
I'm sorry in advance if none of my opinions fit your class, but that's how I would change it if I were you :3.
On Picture 1, I kind of noticed the big jump between colors.
It came from white to brown.
In my opinion, the second picture looks a bit better than the first one.
Why? I think that the first picture is kind of plain, and needs a better and more colorful color than white.
Iron blocks are fancy, but I would change them to a different block, maybe a checkered pattern would do good too?
On Picture 2, the first thing I noticed was the difference between the floors.
In my opinion, the second picture looks better, but that can be changed easily.
As you can see, the second picture has textured sandstone as tiled, and on the first picture, sandstone is not shown as tiled.
A great replacement would be stone slabs! There's nothing more I could suggest besides changing the sandstone to slabs!
On Picture 3, I really didn't notice that much of a difference in terms of great design.
I don't think you need to change anything.

But if I were you, because I am cheap, I would remove the iron blocks and change them with stone slabs xD.
And lastly, I noticed a big thing on all pictures.
I agree with Jackavsfan.
Changing the glowstone with redstone lamps is such a great idea.
It will look so much better!
I just like the tile design on the redstone lamps :3.
It makes it sort of similar to the other texture pack.
Thanks for reading my opinion, and I hope that this helped you in making any decisions to tweak the design of your house.
I think that you have a very great texture pack, but I do understand that sometimes I just feel like I want to go back to the default texture pack.
I would recommend Faithful HD texture pack as it is very similar to the default, but it just made things a bit more "HD" and less pixelated.
