I took a good look at the tree ...now I am no expert on trees lol and one with so many limbs coming off from it would be a challenge for me in a big way .
I also looked at the spruce tree lesson ...now if I am looking at the right one you put a lean on your tree and I like that ...I think the darks and lights are working well together and seem consistant to my eyes .. I seen no spots that stood out and said fix me .
others will come and be able to give you more solid advice ..myself and I did try to find something wrong .. seen nothing at all wrong ...I wonder if one ever puts work in the crique thread that just simply is fine as is .