How do I file for a uncontested divorce from abroad?

I am a non US citizen and now reside in the country of my citizenship. The mother of our 3 children (with the children) live in Texas, USA. We have been seperated for 5 years of our 5 years plus marriage and wife has resided in Texas for over 12 months.

There is no disagreements with property division, child custody or alimony arrangements. This has been happily settled as both parties are on good terms and keep the childrens best interest as priority to our own.

Any information would be very much appreciated.
Thank you.