Rejuvenation can be the action or process of giving new energy or vigor to something.
If something rejuvenates me, it makes me feel or look young again.
If I rejuvenate an organization or system, I make it more lively and more efficient, for example by introducing new ideas or new mediums.
By following this process of making my art, I felt it became more effective and innovative by using new ideas and methods: mixing acrylic paint and tapes on canvas has been a new challenge for me.