f the first commandment is about WHO to worship, the second commandment is about HOW to worship the one, true, and living God.
We are here commanded to worship God according to His Word and not to worship Him using images or any other (biblically) unapproved methods. Is it possible that you have good intentions in your worship, service and devotion to God, but are not actually pleasing Him because you are doing what you want but you are not doing what HE wants?
Let's listen to the Westminster Larger Catechism on this question:
Q. 108. What are the duties required in the second commandment?
A. The duties required in the second commandment are, the receiving, observing, and keeping pure and entire, all such religious worship and ordinances as God hath instituted in his word; particularly prayer and thanksgiving in the name of Christ; the reading, preaching, and hearing of the word; the administration and receiving of the sacraments; church government and discipline; the ministry and maintenance thereof; religious fasting; swearing by the name of God, and vowing unto him: as also the disapproving, detesting, opposing, all false worship; and, according to each one's place and calling, removing it, and all monuments of idolatry.
There is much here to do as we seek to keep worship of almighty God pure and unstained from the imaginations of men in the church. But there is even more to do in our own hearts as we worship improperly ourselves at times.
In prayer Today:
Seek God in His Word, the Bible, that you may know better what pleases Him and how He desires to be worshiped.