01:50:915 (110915|7) - picking up from an off beat like that is really awkward, and I can't see a beginner being able to hit that well. I feel like a note at 01:50:665 would make hitting 01:50:915 (110915|7,111165|7) - much easier, but then hitting 1/4 for 01:50:582 (110582|2) - into 01:50:665 would be hard too...
I'm not too sure how you could go about changing this, but I do recommend you try to make it easier to understand. It's quite off putting as you're following most of the standard snares and drums, but then there's a sudden gap on the beat while the off beat notes are still there.
01:14:618 - I think changing the pattern to something like this is better https://osu.ppy.sh/ss/16451869/17e5
00:12:157 (12157|4) - Extend LN to 00:12:743 since the sound does not end until that point.
01:05:653 (65653|4,65653|6,65712|5) - I think you can make this more comfortable to play by avoiding 1+3 > 2 pattern for 1/4 snap on 256 bpm. Just an example: https://osu.ppy.sh/ss/16451837/e506
How come there is W here 01:54:088 (114088|2) - but no W at 01:17:382 - ? Both parts sound exactly the same.
I'd personally delete 01:54:088 (114088|2) - since I don't really hear a sound here (it's just vocal).
01:53:912 (113912|2,113912|0,113912|1,114088|3) - I reckon you should mirror this pattern here 01:17:206 (77206|3,77206|1,77206|0,77382|2) - since it looks nicer.
01:17:382 (77382|2) - This note is quite weird to hit with the SV. I had to go into the editor to figure out the timing to hit the note. I'd personally remove it for playability, but I know this note represents the second syllable in the vocal (when they sing '1') so I guess it's okay to keep it too. Up to you :p
Same applies to 01:54:088 (114088|3) -
01:17:206 (77206|0) - I understand you have single notes with LN ends around here as a motif, but for a note to have all 3 hitsounds attached to it makes it seem like it should at least be a double at minimum, right? This one's very nitpicky, sorry. It plays perfectly well as a single so doesn't need to be changed, but I just thought I'd point it out.
Same goes for 01:53:912 (113912|3) -
00:33:618 (33618|3,33971|3) - I reckon these could be doubles since it's a unique part with the emphasised vocal+brass and 00:35:559 (35559|3,35559|2,35735|2,35735|3,35912|1,35912|0,36088|1,36088|0) - are doubles despite it not standing out compared to 00:33:618 (33618|3,33971|3) - .
Doubles usage from 00:28:204 to 00:37:699 seems rather inconsistent.
From the beginning of 28sec you have double note at the start of every 2nd bar, but then consistency is broken with a double 00:34:246 (34246|6,34246|4) - here
00:31:224 (31224|5,31368|5) - Why are these notes on the same lane? You haven't put notes in the same lane within 1/2 snap in this section. Nothing stands out in the music that warrants this pattern.
00:29:498 (29498|4) - Note for melody but 00:34:677 is missing note for melody. Fix inconsistencies.
00:43:454 (43454|6,43742|6,44030|6) - Move to left hand lanes since you alternate between hands every bar.
00:44:318 (44318|6) - Move to left hand lane but don't put it in the same lane as above since you change lanes at the end of every second bar. E.g. 00:39:426 (39426|3,39713|2) - , 00:41:728 (41728|1,42016|3) -
00:28:778 (28778|2) - Move to 00:28:922 to follow melody more accurately since you are following the melody in this section e.g. 00:31:944 (31944|2,32375|3,32807|4) -
00:15:480 (15480|2,15814|1,16147|3) - I think this is pretty tough for a beginner if they are a left handed spacebar user. I would shift either 00:15:480 (15480|2) - or 00:16:147 (16147|3) - to the right 3 columns to make it a bit easier. Make sure you adjust 00:16:480 (16480|4) - if needed when changing the previous^^ pattern so it flows well.
00:49:804 (49804|4) - Move this long note to column 9 so that it jacks with 00:49:425 (49425|8) - . These two playing the same notes in the music makes it feel like a jack should be present.
00:49:804 (49804|7) - Move this long note to column 5 (spacebar) if you apply the above change so that you're still keeping most of the accompaniment on the left side.
00:54:741 (54741|6,56640|7) - a long note into another note at the end on the same hand is quite hard to hit accurately, especially for beginners. Highly recommend you change this long note 00:54:741 (54741|6) - into a normal note. I would also recommend you do the same with 00:57:779 (57779|4) - .
00:21:323 (21323|2,21323|0) - While pinky + middle finger chord is not extremely difficult, changing this chord to a more comfortable combination is recommended as this is the easiest difficulty and designed for beginners.
00:20:944 (20944|1,21323|2,21323|0) - Highly recommend you change the pattern here. Transitioning from ring finger into pinky + middle is quite difficult, especially for beginners. This is an easy difficulty after all.
I would personally move 00:20:944 (20944|1) - so that the right hand is hitting this note.