1. Arabic script is aligned to the right. Interface flows from the right. If your Arabic is aligned to the left, your text is wrong.
2. Arabic script generally has a clear and visible baseline, connecting the letters. If you cannot find a baseline, your text is wrong.
3. In general, the letter combination ال should be common. The combination لا cannot occur in Arabic script, as those characters should be connected.
Here's a 18 minute video of I talk I gave at XOXO in 2015 that'll teach you more than enough Arabic to not embarrass yourself in front of everyone who can read the Arabic alphabet to some degree. That's about 2 billion people, or 28% of the human population, and they will absolutely notice that you don't know what you're doing and laugh at you in languages you cannot even read.
Please submit it to notarabic.com via @ra, so it can join a list of small independent companies with limited budgets, such as Disney, Google, Coca Cola, Pepsi, Github, HBO, Marvel, and other such companies that would rather insult a tenth of the human population than actually pay to have someone who knows the language look at it. Shoutout to Marvel Studios for getting 'United Nations' wrong, something you can check in about 2 seconds at un.org/ar.
The Arabic-scripted languages are spoken, read, and/or written to some degree by over 2 billion people on Earth. I hope this will you help in case you cannot afford to hire anyone at all with a elementary school level of Arabic script reading. You can find me yelling about Arabic and videogames at @tha_rami, or contact me for consultancy or questions at r@miismail.com.
Made by Rami Ismail. If this website was useful to you, please consider shouting out the website on your social media or maybe send a quick thanks? That'd be nice.