I want to file the full custody for my both kids

No sure what you mean by full custody. You may be able to limit his possession until he has a suitable place to have them overnight for visits by...

How do I get a divorce living in a different city n he is locked up?

Hire an attorney. It is quite easy to divorce a person in prison. You know where they are to serve them.

The person at your house, your mother, let the child's mother in the house. Your issue is between you and your mother.

Is appealing to higher court from municipal conviction for immigration purposes?

Pleading no contest is essentially a guilty plea and will result in a conviction. Consult with an immigration attorney about the impact on you...

What is the likely outcome of my custody modification case? And will my ex be able to contest the motion even tho the warrant

He can contest it even though he has a warrant or a capias for his arrest. If he shows up he may be arrested though.

Can I sign temporary custody of my son to my stepfather during an open CPS case?

Yes, but your stepfather may end up with custody if you leave the children with him too long. You still need to address any drug, alcohol, mental...

What paperwork do I file to get a writ for attachment?

A Petition for Writ of Attachment. Hire an attorney.

What if I have no transportation can I make CPS bring the drug test to me instead of going anywhere out of my way?

If it will get CPS out of your life find a way to get there. Take a bus. You can ask them to bring the test to you, but they are likely not going...

In the DFW area service by substituted service on a family member or close friend does not require the appointment of an ad litem. I don't know...

Is it a good idea to talk with a police detective in person?

Are you victim or the accused? If you are the accused, I would leave well enough alone with the detective, and consult with a defense attorney.