From the queue:
Looks like you need to get the basis down first.
Let's use Easy diff as an example.
Oh and not sure how you got the timing to work but I would set the Offest to 114.
You could just change it to 4333, it seems a bit too early.
EasyNew combos are kinda all over the place.
Generally nc is used on measure or sentence start, and they don't necessary have to contain the same number.
For example:
00:07:585 (6) newcombo here.
00:09:460 (1) instead of here.
00:11:335 (3) if you feel like adding nc because of increasing objects, start nc here.
00:13:210 (1) no nc here unless you wanna emphasize circle 1 2 3.
Same goes with the rest of the map.
Also there are a few slider shapes that are usually "safer" to use (deemed "better")
Here's a post on that:
https://osu.ppy.sh/forum/t/20859600:28:210 (8) for example someone may ask you to reshape a long slider like this.
00:43:678 (3) simple, smooth curves with only 3 control points are preferred here.
Same goes with the rest of the map.
Time-distance equality is another thing to consider since there are guidelines in rc:
https://osu.ppy.sh/help/wiki/Ranking_Criteria/osu!"Time-distance equality should be used"
For example, if two 1 beat (time) gaps have different gap sizes (distance) it's considered bad.
00:00:085 (1,2) - 00:01:960 (2,3) these are fine since they are so far apart in time.
00:05:710 (4,5) - 00:06:647 (5,6) while these are not fine. 4 5 and 5 6 are both 1 beat apart, but they are not the same distance apart.
Two tools for you:
1) If you click on (select) an object, on the top right corner you can see something like "Prev: 1.34x Next: 1.04x"
That's the gap between it and the last and next object, distance divided by time, relative to current slider velocity.
Basicly if the two multipliers aren't the same they don't follow t-d equality.
2) By holding alt, the next object you place always follow t-d e.
As for spinners though they are not rhythmitic it's best to still map it to significant sounds.
01:57:272 (1) for example I would put an extra circle where the spinner head is and start the spinner 2 beats later.
Finally don't forget to use AiMod (ctrl+Shift+A) to check for mistakes.
Hope you find this useful.
Edit:
For some reason timestamp wasn't working, now it is.