Set right reflections - use reflection planes eventualy on water.
Truly amazing visualisation. Explanatory, great color correction and the right contrast for the most important part. Using a dark water material makes the project really stand out from the image.
Great model, texturing and the overall detail. Also the atmosphere is quite interesting, I like it a lot in general. Only thing I would avoid is the forework on the very left - these very bright components tend to "steal" the attention and viewer´s focus from the most important part - the architectural object in the middle. You can always move it closer to the building (behind it) where it´s doesn´t harm the focus that much.
This is a beautiful render, there's not much to complain about. I usually advise caution with puddles and the like, because customers and observers do not always respond to them and rain, but here it makes the most sense. It beautifully shows the contrast of interior and exterior and attracts inside. I can't know to what extent it's a 3d model and how much it's a plot. This in itself is a sign of perfect work.
Great image! You definetely have the technical skills and artistic feeling. And as such I will focus more on the details throughout the images.
1) Flowers in grass - Like the idea, just be careful with how much attention the flowers take. Especially the blue flowers are way too satured in comparison to the nice colorgrading of the rest of the image - I would lower the saturation little bit.
2) Framing - Personally I would frame the image so the building one the left is more prominent and working as a foreground. Either by moving the building or by adjusting the framing. Same goes for the tree on the right side I would move it in a little bit more.
3) Banding in the sky - These stripes usually occur when working in jpgs (or any other compressed file format) in postproduction. The way around this is to work with RAW files in more than 8 bit color depth. Personally I use TIFs.
4) Background through trees - Maybe it is correct this way depending on the reality, but usually I would put either models in the background or simple plane with some photo mapped. This way it feels that the proposal is on a hill or something.
5) Wall texture - I have a feeling that the texture repeats itself especially on the marked side (red). Most softwares today have some sort of UVW randomizer that can help you with this. Also is the scale of the brick wall correct? It is hard to tell but always check the scale of your textures.