XXX unit or XX leader:

I started taking care of trees in XXXXX.

In the future work, there will be no destruction of trees, which will

Restrain yourself with strict requirements. The above promises are my own promises.

The rigid scale in future work will never be violated. XX unit, please.

Or XX leadership supervision.

Commitment: XXX

20 1 1 year x month x day

I don't know why you should take care of trees, so this is just a rough idea. You can modify it according to your own needs. I hope it helps you!