Modding Difficulty: Guitar (Hard)
The main things that seemed a little off about this map were setup, spacing and patterns.
Song Setup
1. Circle Size: Change circle size from 5 to 4. I'd recommend this since CS4 is maybe too difficult for a Hard difficulty and not used very often. I'd use it, if at all, on an insane difficulty. CS 5 appears more fun to play as well.
Note: if you find that the map is too easy, you can always make it more difficult by adding larger jumps/few triplets. Experienced players can simply use the HR, so I'd go with CS 4.
2. Approach Rate: Change AR from 5 to either 6 or 7. AR 5 is more of a normal difficulty approach rate, so I'd recommend using AR 6 or 7 instead. Especially if you want to keep the current circle patterns or have more complex patterns like those at 00:01:623 and 01:13:456 for example. These are more difficult to read on low AR, so I'd suggest to increase the AR to make it a bit easier and possibly more fun as you can add a few more patterns.
HP Drain and OD look fine.
Tags: You can leave out the comma after Vocaloid in the tags. The words just need to be seperated by spaces.
Patterns and Spacing
1. Overall, I'd suggest spreading out the patterns a bit more throughout the map, especially from 00:02:123 and 01:10:290. Consider making these a bit simpler or spread out.
2. The sound of the second circle in patterns from 00:32:956 of two circles each sounds a bit off. Maybe you could use three circles to follow the sound of the guitar in the background instead of two.
3. I'd consider to make some different patters at 00:48:956, maybe circular or other shapes to make it more interesting instead of moving up and down the entire screen.
Use of Objects
1. I'm not too sure about the spacing and use of the sliders from 00:24:956 to 00:32:206. Even though you're following the guitar, they play a bit weird. Consider replacing them with single circles or a short breaktime or a mix of the two.
Let the map play in auto a few times and listen to whether the hitsounds match up, because they appear to be off in a few places.
That's all the comments from me. Good Luck with your Map! ^^