Quite nice photo's. I got some VERY basic experience with photographs about Aperture/shutter time/lenses.
Quite nice use of Shuttertime on the first one. Didn't knew 8min could create such a effect, and i'm suprise the trees stayed the same. Would expect the trees to change a bit to due to wind Oo. Though i always love to see a trail of light effect with it from cars on highway/cities. Or seeing how water fall from a tap. As cliché as those may be. They do make really nice pictures imho
And good use of Aperture on the seagull, very nice sense of depth. A technic signature makers should also know how to create in their signatures for pulling the focus to the place they want to.
Don't think i got much advice to offer. But perhaps you could make it easier for more dedicated photographs to give advice if you put the lens/shutter time/aperture/iso at the photograph so they can compare and tell how you can improve