Critique wanted if possible

[megamax124]

Okay guys, i needed to add a window so i made the basic structure but how should i do the shading of the glass?

have a nice day,
max

[Johasu]

That darker color you are using on your standard bricks is really contrasting with the other two colors.  It makes the bricks look really rough and broken or like they have something on them, such as paint or patchy mortaring.

A suggestion for shifting that darker shade to something more subtle.

Also you might think about giving your gray bricks a bit more attention, they really stand apart from the other bricks as they are so clean and pristine by comparison.

So far your light source is only from a top down angle so an angled shade on the windows isn't the first direction I would go.  Cast the shadows downward and see how you like it.  I did a quick and extremely simple adjustment to show you what I mean.

[Glak]

The windows should almost black unless the room inside is lit, in which case they should be the color of the light source (probably gold).  There is no justification for a medium blue color unless you are trying to show a reflection of the sky, and in that case you will have to draw reflections of other things and you'll probably want to do it using parallax.

[megamax124]

Okay guys, last question, i promise 
I also need a door image, so I tried it and this is the result:

It looked very dull with only one color so i added some highlights but it still looks weird.
any tips/edits?

[Linaru]

it would probably help to have a door frame to separate it from the wall a bit

[Pusty]

I guess it looks weird because the door is missing something to separate it also
the bricks above it are aligned to  the door
But the door itself looks good

[Alex Sinigaglia]

I don't want to come off as rude, but it looks like you resized a jpeg (or a blurred image) for the door. There are too many shades of the same colours.

[megamax124]

I don't want to come off as rude, but it looks like you resized a jpeg (or a blurred image) for the door. There are too many shades of the same colours.

Not rude at all if it's helpful :p. i started wit honly 4 colors but it looked very flat. do you have any tips on how to reduce colors and still make it look a bit 3D?

[Alex Sinigaglia]

If you have too many colours you could reduce the amount by indexing the image. When you index you decide the number of colours to be used.
In your case you have the wall with 8 colours and the door has a lot, so I would:
take (copy) the door alone,
open a new file,
paste the door in the new file and crop the image,
index the image.

I tried two solutions:
   
The first image is the door you have; the second is indexed with 16 colours; the third with 8 colours.

Then you could work on that and fix it to your liking.

Alternatively you decide the palette beforehand (number of colours, which tones etc.) and draw it.
There's another method: you could use the palette you decided for indexing the image.

[Glak]

You need to look at references.  Most of the problems that people have pointed out (and some that they haven't pointed out) would have been resolved immediately if you just looked at some photos on the internet.