Based on some of the comments about the tree and jar too dark etc, again, this can be toned down with different shades of thread and thread painted ... I don't mean a thick, all-over thread painting, but to add bits of branches, browns or tans to add shading to the red jar ... that kind of thing.
I think you will be really surprised and delighted with this when you finish it.
For a first attempt, you did great!