by important » Fri Nov 18, 2016 8:19 pm
Please do not take this the wrong way at all, as I would only like to help!
I understand that you cannot yet read kanji, so I will leave that alone.
But in your first sentence, こにちわみんなさん, it would be written as こんにちはみなさん
The only issue is that you forgot the 'n' standalone letter in your 'hello'.
Also わ, when used in hello and as a particle, is written as は so it would be こんにちは instead of こんにちわ
Minor spelling with みなさん, as you added an extra n in there that wasn't needed :)
よろしくお願いします!
頑張ってください。