I wouldn't bother trying to trim the sides much now. Your beard is quite curly, so it is likely to look a bit messy at this stage. When you get more length, just brushing it should make it look neater and help flatten the sides, making them look shorter without sacrificing the additional coverage you will get with more length. If you do decide to trim the sides, just make sure you trim LESS than you think you should. Often, only a small trim is needed to make a big change in perception.

I usually trim my sides short down to about the jawline... it is really a matter of personal preference... just remember to take it slow

Stop trimming your moustache; greater glory awaits!
...but if you are going to trim, do it right, go pencil...
...then, of course, a nice copstache can be cool too...

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