Neither…
Start with drawing, digitally or physically, to help you get a visualization of what works and what doesn’t work. It shouldn’t be detailed, just a bunch of sketches the get the general idea of what would go where, how it would fit, proportions and relative sizes.
If you start with simple sketches it will be easy to refer to your original idea as opposed to just trying to refer to memory, as your mind will constantly change and think about different ideas, making it a big mess of many different ideas thrown together with no relation.
It’s also a lot easier to try different layouts and change your mind on paper since it’s so much quicker to erase a light sketch and redraw your new idea. If you were to dive right in, any time you change your mind, you’d have to change a lot more as you would be changing the bigger things such as where a house goes, as well as smaller things like the rotation and position of the chair on the front porch.
Secondly, after your final sketch, expect to still change your mind a lot when you enter the 3D world, so don’t dive straight in from their either. Your second step should be to “Block Out” your sketch. In other words, nothing is detailed, everything is made of up blocks just to get a 3D visual of your design allowing for perspective and size relativity.
For your Third step, you replace your blocks with the Bigger objects like houses, roads, trees etc.
Finally, you will end with the details like the chair on the front porch, and where cars are parked etc.
Optionally if you decorate the interior, that should be very last.
Summary:
- Simple Sketches
- Block Out
- Bigger Details
- Smaller Details
If you have already jumped in, it’s ok to backtrack and get some sketches down. The point of this process is to allow for creativity and keeping an open mind as you work.
Hope this helped, Good Luck on your project.