Yes, the main take-away here is that any elements you create on your turn from any source (abilities or items) do not get moved to the strong column until the end of your turn. This means that you cannot create an element (that wasn't already present) and then consume it on the same turn because it won't be available to be consumed until the end of your turn. On the up side, this also means that if an element is already strong or waning at the start of your turn, you can create the element again with your first action, consume the existing element with your second action, and then the element will still go up to strong at the end of your turn even though you just used it.