Pipirpi, I commend you for sharing with the world your faith. Please consider the following:
We should always walk in His footsteps. Certainly, if the spirit moves you to do things differently on Saturdays than you do on other days, follow after the Spirit. But does that mean that we are spiritual policemen enforcing what we believe to be God's law?
If I do not love am I not shattering God's law in a single blow? When Jesus picked out the weightier matters of the law, He did not mention the Sabbath as one of them. He mentioned 3 Justice, Mercy, and faith. (Matt 23:23)
The spiritual problem with reducing God's Law to a single commandment by focusing solely on it is that we miss out on what actually saves us. I am sure that you would agree that keeping a sabbath will not save anyone. If a person behaves differently on Saturday than they do on other days of the week out of love and adoration for their savior, then that is a very good thing. That would be true of striving to obey all of the commands of God.
The Law of God is much, much bigger than just the Ten Commandments. It includes everything God said in the bible including all of the things Jesus taught and it extends to the real world in all of the laws of nature. If I pick out one tiny command in one tiny part of God's law and push that then I get trapped into ignoring the rest of God's law and I get tangled up in definitions because it is not enough to just say, Keep the sabbath, for now, I must define how to keep it and that opens a can of worms which soon devolves into a discourse that is not loving.
Pipirpi, I commend you for sharing with the world your faith, but perhaps God is calling you to show His love also.