We are looking for help to create our own coin with smart contract based on Stellar. Can anyone help us.
On Stellar, you can easily create a custom asset using the Stellar Laboratory web interface. You do not need to write a smart contract to do this. Please read the Stellar Documentation beforehand to understand how Steller assets work. This article from Lumenauts will walk you through the steps of creating your coin. I suggest using the Testnet to do this before actually creating on the public network. Good luck.