if you want to use it, you'd better sign a power of attorney to avoid disputes in the future. Signing the power of attorney now will be well documented in the future, which will be good for both parties and avoid wrangling. Moreover, after your publicity, the trademark will certainly be recognized by everyone, which will lead to the promotion of the trademark value. How to deal with this also needs to be decided by both parties, otherwise it will not be necessary to make wedding clothes for others in the future.