Yes that is correct my BTC address from Binance.
Wow man, this is very risky, as some exchangers refuse coins issued by the coinbase generation. IMHO you should install Electrum (from their official website, you can always verify the signature of the downloaded file) and mine with an address from it. Imagine you find a block by luck and your reward is seized/frozen by Binance ? It could be avoided only with 5 minutes to download and setup Electrum

Potential life-changing amounts deserves to be
your own funds ; as you may be not know the funds you have in your Binance accounts are not
your property.
How can i do to have 1 valid share please ? Any instructions?
You just need to mine and nothing more, it takes usualy some seconds/minutes depending of your hashrate. With a Nerdminer it can take a very long time I guess.
Happy hashing!