filter was used.playing with colour filter.
hope you dun mind me saying that. i think starting off with working of subjects (i.e. exploring subjects that appeal to you), achieving compositional impact and getting the main body exposure is priority over colors and tonal distribution. play with filters, panning and motion is what many people start to get excited about initially, me too, but i find that they dun derive much effects without getting some other factors concrete first.
probably white balance issues, something like fluorescent
anyways; in a lot of photos, horizon is tilted, please correct it, not that hard
keep shooting! there are really too many photos for me to comment, to be honest.. but in general the composition is not very strong
a good way to improve, in my opinion, is to be highly self-critical. for me, i delete every shot before PP that i think composition is not there
this way i save myself a lot of time with regards to pp'ing and also, i find out what sort of shots should be taken
hope you dun mind me saying that. i think starting off with working of subjects (i.e. exploring subjects that appeal to you), achieving compositional impact and getting the main body exposure is priority over colors and tonal distribution. play with filters, panning and motion is what many people start to get excited about initially, me too, but i find that they dun derive much effects without getting some other factors concrete first. i can see your efforts in exploration, some of the pictures shows much potential becos it shows you try to see things alternatively, although they are not solidly taken as an overall per picture and dun glue together as a series.
in fact, the first two pictures give me some idea. half-half in such cases may not work per picture, but if you can do many takes of it, with good colors, you can collage them together as a grid.
Think the rest has mentioned, your photos either lack a strong subject matter, need to work on composition, exposure (day shots got a lot of blown highlights, while later shots quite under).
Shoot more, but spend time thinking about your subject matter and composition before you taking the shot.