Of course it's OK. If you do so, we can figure out what do you want to say without difficulty. And every Japanese child who still has not been taught many kanji write article in this way. But if you did so, you cannot help being regarded as childish in this discriminative country. However, it's not your fault. It's a matter of course that foreign people don't know many kanji. I hope that you don't hesitate and carry out your way.