(Nice french

Something more correct would be :
"Pourriez-vous m'indiquer les détails qui ont besoin d'être améliorés? Cela me serait utile."
1 : Everything outside is white, which can be a choice, but not mine

2 : Not really interesting as a composition. The little "plus" is missing. Technically it's OK.
3 : Same critic. Plus we don't really see the subject (what's in the basket)
4 : Nice shot. Maybe a bit confusing, but as the squirrel in the city (good choice, if it was one

). The white line coming though the animal (on the right) should have ended a bit under it, and not directly on it's head, but I know squirrel are a difficult subject.
5 : Great composition, but the focusing should have been made on the "main" flowers (those in the middle, which should have been placed less in the middle, for example a bit right and down, try cropping)
6 : Strange composition. The powerful opposition between hand and foot, is confusing. The hand should have been more in focus (more closed lens).
7 : This one should have been taken a bit from above, in order to unhide the house in the background, and not to center the "soil" where birds are standing. The bottom part of this pic is to me useless (nothing special to show there)
8 : Really expressive picture, but too classic. Placed one or two step on the left, and a bit crouched, you'd have had the perspective lines from wall, and maybe something interesting in background, depending on the environment. (but not sure ; at least the perspective lines would have been interesting)
9 : Here is (to me) the centering interesting. There's some kind of "flower explosion" which needs to be exploited. With a shorter focal lenght, for example.
10 : Nice colors, but the focusing should have been done on the "main" red bottle, which is also "cut" on the upper edge

11 : Also a bit confusing. The orange feather (?) is too centered. (vertically speaking)
12 : Perfect ! Except one thing... (sic) There are hotspots on the two middle flowers...

13 : Here is the hotspot not a problem, to me. There's a little too less space upon the "door". Have you tried cropping it vertically (in portrait) ? I'm not sure it'll works, though.
14 : Really nice texture.
15 : Once again, the hotspot in the bottom right corner is there

16 : Nothing to say (yes ! it happens

)
17 : Hotspots again.
18 : Nice one, but the church should have been more visible (but it was maybe not possible)
19 : Really nice water texture. The boat and the anchor are too exposed for me (but not "hotspotted")
20 : The reflection of the light is not entirely in the frame. Same thing for the feather on the left.
Looking at the whole series again, I've seen no vertical composition. Are you used to it, or is it "luck" ? If you're not used to it, you should force you to do it as an exercise : you're missing half of the composition you could do
