You posted twice of each photo.
My favourite is the one with all the threes in the fog, mainly because of the mood.
Also the chopped tree is nice.
The main issue is composition. I often miss composition (so, don't take me as a I-know-all-professor...I'm in the path of learnign together with you), so right now is what I most look for.
What are you trying to tell with your pictures?
For example: in the one of the pine leaves...what is the message? What is the emotion you deliver? What are you trying to say? Some pictures just deliver no message, but have interesting geometry or composition. This seems a detail, but when I look at it my eyes begin seraching for the interesting point and...get disappointed for not finding any. It's like looking to Jurassik Park and the movie ends when the characters arrive to Isla Nublar. So?
Same issue for that kind of ball (numbering the photo is a good idea). Beside the distracting tree on the left, the ball is dead centered and lead to nothing interesting.
Keep trying and posting.
If you can find it, take a look to "The photographer's eye", by M. Freeman.