Recommendations for custom bespoke handbag / duffle maker in Bangkok or Thailand in general

I’m extremely particular about my EDC bags and I keep going through many of them whether from me not knowing the quality was bad, to just not liking the functionality from a day to day basis.

So I’m looking to commission my own bag with some cool patchwork and maybe a custom shape. 

I don’t need designer level artisan crafting (hand stitched etc) but I definitely would pay for high quality material. 

Who can I go to or what do I even google for this?