Nothing that you should spend your money and time for
There three main points to consider any custom manufacturing which are true for MakeYourOwnJeans too.
1. What you see is NOT what you get
2. Any small error in measurement leads to huge disappointment
3. It is always more expensive than to buy a-ready-for-use product
The fabrics itself does not look and feel as good as you can imagine; just average jeans material like that you find at Walmart. If you are not professional sewer, you'd better stop to try to measure yourself. Even though you provide them with correct measure, they can make it very different. Yes, they are ready to fix any mistake; however, it takes another few weeks, and of course, you should pay again shipping and customs fees. After a couple such 'back-and-forth' tries you simply get something like this in the picture.
If you read this review because of hesitation, your guts don't fool you. Is it worth trying? Obviously not. Just go to the closest store (or even online where you know for sure your usual size) and buy new Diesel, for example.