i may have to change a camshaft seal and i want a few pointers?

There are no tips outside the ordinary on doing these types of repairs.

Basically, take your time and follow the instructions below.

Since you are installing the cams again, we should double check to make sure there are no issues by running a compression check on the engine.

https://www.2carpros.com/articles/how-to-test-engine-compression

This is nothing more than making sure the head is torqued properly and the timing is correct.

Please see the info below and let us know what you find on this.

Thanks