Lefl, I'd say don't trim the cheekline and neckline. You have a nice natural cheek line that doesn't need any trimming. At some point you may want to think about trimming the neckline, depending on what your overall goal is, but I think it is premature for that right now. Let it grow out for another 10+ weeks to see what your beard is capable of. You are of to a great start.

Cheers,

Sean