Hi, I’ve listened to your tracks. I may help you with some suggestions.
Please try to write as organic as possible. If you use vst, make sure it has good phrasing like proper articulation, dynamic, expression, sustain, vibrato etc. If you intend to add some electronic element, make sure you make strong synth sounds. Your tracks energy sound weak compared to other AJ tracks and some instruments especially strings/guitar sound robotic, which is easy to notice in my opinion.
Technically, You may think about adding some sustain, reverb, delay or punchiness and fullness to your tracks, achieve maximum loudness potential as hard as you can. This can be reached through the balance of arrangement, mixing and mastering. Use deep imagination to exploit some frequency space.
If you learn from AJ tracks, you should probably understand that they have pretty similar style in terms of arrangement, mixing and mastering. So keep your time to practice more and build your audio perception instead. You really have potential!!. Don’t give up!!