Hi,
If you would like to go down the route of building i recommend doing some
themed builds to help improve your skills, many artists, designers & foremen will be willing to offer you advice with improving your builds. You can do
/theme to claim a plot.
As well as this jobs are often ran by foremen where you can help build, this is often things such as streams, paths, etc. you can find out when a job is running if you join the
discord in the
#job-alerts channel.
Once you believe you have enough experience / skills building you can apply on the forums at
Artist Applications.
(remember to take screenshots of anything you work on to help when you apply for artist)
All that being said, it is best to get commoner first if you do not already have, you get this from votes from players artist / guide + for doing building jobs, helping people in chat, being active etc. (you need 10 votes)
Hope this helps
-Gadge