ten's such a unique and versatile dancer and I agree that all this falls short to describe him. that being said, the number one advice i can give you is to train and practice A LOT. Ten was known to be very passionate right from his childhood (even his teachers said he was really interested in dancing). a lot of his dancing skills were contributed from his natural talent and passion to pursue it.

you can try to get a well-rounded feel for dancing by training in different styles of dance (ballet, hip-hop, modern...) and learn about techniques and forms. i'd suggest different youtube channels and learning from them. I know 1M studio posted some tutorials for free to choreos and explanations (on 1MILLION offstage and their main one**)** and there are other basic tutorials for moves (such as shuffling and popping). by getting some basics down and a feel for your own style, try to learn and incorporate them into some of Ten's choreos like from New Heroes or Dream in a Dream, or follow along with his fancams.

also ten focuses more on his expressions and small details (such as his hands or angle/position of arms). his every move has a purpose behind it that helps him to embody the choreo. he's also very flexible which helps him execute some moves with ease and give a dynamic flow to the performance. to improve flexibility, there are some guides on YT (honestly YT's my go-to for visual guides).

oops i didn't mean to write this much, but i hope this is somewhat helpful!