(11-05-2017, 10:21 AM)Amit Dutta Wrote: From such a low angle we would see the underside lips of the blue roofs and much less of the tops.  You just haven't got the vps in the right place on the horizon for the sides of the buildings facing the sunlight mostly.

Just take some of the parallels of the roofs from that side and see what VPs they end up at: pretty much everywhere but the actual horizon line!
They should go to generally the same vp if at the same rotational angle as each other or different VPs if rotated BUT on the SAME horizon line.
Unless you are going for a slight fisheye lens which then distorts everything and makes the HL curved and thus changes where VPS will lie.


Doing some perspective exercise refreshers will be a proactive thing you can definitely do to improve, while you decide what to do next if you decide to abandon this and hopefully distract you from beating yourself up about painting skills. :)

(11-07-2017, 06:56 AM)Amit Dutta Wrote: the castle is more consistent now, but some roofs still don't go to same vps (closest building to us in centre for example). Also, all ellipses of the conical roofs and the ring wall should also match the perspective. This also brings up the choice of vps: if too close together it can create a lot of distortion in the resulting image which may be too extreme.  I'd recommend based on how you seem to approach things that you do some perspective exercises and reading to nail down your understanding more. Specifically, understanding how to rotate objects and constructing/troubleshooting ellipses.  Scott Robertson's How To Draw has all you need.
It's a challenging image and involving architecture so any persp mistakes will be especially visible. Easy to go wrong!
This is exactly why you should nail the basics in your initial sketch before rushing to rendering. Messy sketches for idea generation are fine, but they don't make for good technical bases to work on if you don't address basic problems up front