Generally, I don’t think I have any difficulties with building. But, here are some topics that others may find it hard to focus on:
Deciding which style they should use and how they should concerate on making this certain style appear in their game, this could be focusing on something low-poly, from the 1970s, related to a tv show or movie, etc.
Gathering ideas on how to build something new, something that hasn’t been seen before and has been developed based on references or thoughts.
Being hired, how to get work based on their experience, skills, etc.
How to combine your building skills to develop something into a script that could be used. This could be something like drinks, food, balls, etc.
Making something a certain shape to actually resemble what you had imagined, this could include roofs, trees, flowers, stoves, etc.
Sometimes, I feel like the build isn’t good enough, which other people think it is. I’d say to include something about asking for advice on something such as the Devforum, anyway, more building related, Sometimes I have trouble building to the scale of the players, and forget to use the humanoid for reference, which is what it’s helpful for.