Let's a-go!!
No real intro here with the synths near-immediate entry into the song. Synths are honestly on the bland side here.
The beat isn't bad itself, however, it pretty much stays on autopilot the entire mix with no fills, dropoffs or changeups.
Arrangement-wise, this is very conservative - making it sound more like a midi-rip/sound upgrade than a ReMix. Really need to take some care in personalizing this to your own creative arrangement.
I hope this doesn't come off as too negative as I don't want to discourage you. I just recommend you keep working on both production and arrangement. Explore some more synths, look at lots of presets, get an idea of what sounds good in existing mixes and why, etc. Try some variation in melody, flow of the song, harmonies, breakdowns, tempo, etc. Imagine how you can create something new while still keeping the connection with the original.
At this stage in mixing, I suggest you let this one sit a while and try your hand at a lot of different tracks and styles. It's really easy starting out to get attached to a mix you've spent a lot of time on, but I found that when I started moving on to a lot of new things and trying new techniques, I really started to progress. I'm not trying to tell you that you have to drop this mix, I just think it'll help you progress to keep trying new things.
Also, keep posting your mixes here and we'll keep trying to help you improve. Hope this helps.