1. How to find the best color scheme/theme
I find the best colour scheme for assets and maps by playing around with colours in a build. It’s common for me to try out at least three colour combinations just to be sure that the one I picked fits in with what I’m trying to achieve for the player’s experience.
Here’s an example of what I tend to do:
https://twitter.com/Aotrou_Rbx/status/1081072138503634944
2. How to initiate your plans in creative ways
Executing plans takes a lot of thought, time, research, and practice to get right. Here’s a thread where I wanted to achieve a rather simple goal, and the steps I took to achieve it.
https://twitter.com/Aotrou_Rbx/status/1084536198176038912
3. How to take your time to find effective building methods
If I’m understanding what you’re asking here - “what method is most effective for building”…This comes down to preferences in work flow, which usually come down to practicing and finding what suites you best. I personally rely on my 3 and 4 mouse buttons (the extra ones some mouses have) to do more common actions like Undo and use the plugin Studio build Suite for all my in-Studio work. Once I got my preferred workflow set, I really don’t like to deviate haha. If you’re still finding yours, try different hot keys, plugins, or other tools to see if they help you do your work faster.
4. How to organize everything effectively and chronologically
Folders. I use CamelCaseWithTwoNumbersOnTheEndLike01 because it’s easy to read and I like to number my iterations/versions of assets. I know some devs prefer Using_Underscores_With_Two_Numbers01 which is totally valid as well. And name everything. Nothing is worse than an Explorer with a thousand assets named “Model” haha.
5. A well thought-out layout and style
This kind of ties into #2, but I see why you separated it. A well thought out layout starts with a plan of course. A conversation with the team as to what the goals are, a greybox, a play test, etc just to see if it fits in with the game. As for style, I try out a variety of styles and communicate with my team as to what they like the most, or what fits the most in with the game.