Thank you for your contribution @duski.harahap.
After analyzing your tutorial we suggest the following points below:
Your tutorial is quite short for a good tutorial. We recommend you aim for capturing at least 2-3 concepts.
We've suggest you several times to put comments in your code sections. The comments greatly help less experienced users understand the code.
In the next tutorial we thank you to put more features.
Looking forward to your upcoming tutorials.
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thank you @portugalcoin in the next tutorial I will spend my time making more interesting features
Thank you for your review, @portugalcoin! Keep up the good work!