As Granada said, never be embarrassed to show your work, especially not here!
The work you have shown here is really good. You have obviously mastered the basics of mesh manipulation and unwrapping models. A small note would be, watch your proportions, if you have a photo or a direct reference to work from, you will find it easier; so, in this case, I am talking about the building with the white section in the middle. In the photo, the white section is relatively thin, but, on your model, it appears to be similar in width to the section s next to it.
This is not a criticism, just something I noticed right away. If you can get the proportions right, your models will always look better. You can have the most detailed model with a highest resolution textures/materials, but, if the proportions are off, it will always look off. In this case, it's not too bad as, if the photo weren't there as reference, I would have never known that the sizes were different, but, it's good practice to get into when you are learning.
That's enough rambling from me!
Awesome models so far! Keep practicing, you will be producing stellar work in no time!
Cheers
Jay.