The best way you can do this is by getting a degree from a good university. If you are older than 30 years the most suitable way to find good Jobs in Thailand is by adding to skill set and getting relevant experience before applying to a foreign country.
Handle the paperwork well
Being a citizen of commonwealth nations gives you an edge over other countries when it comes to working overseas. Still you have to shift through endless layers of paperwork before the process is over. Remember that you have to present the correctly finished paperwork at the consulate and customs so mistakes are going to be costly and difficult to correct.
Never misrepresent facts, falsify statements and try to bluff your way to a work. Border security personnel have their own investigation sources and if some form of deception is caught it will put an end to your application. See Commercial Fridge
Set aside some money
You will have to spend money on the federal police check, application fees and postal fees for transport of important documents. You will also have to pay for insurance and if your passport has expired be prepared to spend money on renewal too.
Print a good number of passport size photos and keep them handy as you are going to need them on various forms which you will fill. You will have to show customs that you have enough cash to fund your stay abroad. Don’t get irritated over procedural delays as these systems are meant to protect global citizens.
Learning different languages increases your potential of getting an overseas job. You will have to choose a Spanish course which will suit your need. Sitting with a class of novices when you can already speak the language reasonably well is a waste of time and money.
When your current Xero accounting package does not generate BAS facility, then it is time for you to update your accounting software.