Hey man, cool that you're getting back into producing!
I'll start with the dance demo. I think the melodic elements are really well done and the FX/samples are well placed. They sound pretty professional too, aside from mixing and mastering. I think using EQ and adjusting levels in your track would take it to the next level.
I'm also not the biggest fan of the drop. It's vibe is very different from the first part of the track, and the I think the synth might not be suited for a melody with so much happening - I think it would work better in a more minimalistic melody. I think your white noise section is far too long as well - it starts at 1:33 and lasts for 30 seconds. That's 30 seconds where the track isn't evolving or changing, which gets a little dry after a while.
I really loved the beginning section though, and think with some mixing and mastering it could be really great!

Alright, now for the tropical demo. This style is more up my alley so I'll hopefully be able to give better feedback for this one.
I really like your bird samples at the beginning. They're very calming and soothing, and provide the perfect intro. Your percussion that comes in at 0:13 is REALLY well done too, they fit perfectly! The only problem is, I can barely hear them. Their levels are turned way down, and when the piano comes in at 0:23, they are drowned out immediately. All I would do to those are raise the volume up, and cut out any low end if you haven't already.
The piano I like, however it's a very simple chord progression without much happening to it, and little to no variation. I think with some more intricacies, it could be an interesting melody that changes from bar to bar.
I also think the piano is underprocessed. There doesn't seem to be very much reverb, delay, or filter work on the piano, which makes it sound very plain and uninteresting. Simply placing some low pass filter and reverb on that piano I think would make it shine more than it does.
The shake samples in the section at 0:59 sound really nice, and the percussion throughout this WIP is great! I would like to hear another melody or lead over the top of the track, but I understand that it's just a WIP and you probably haven't gotten to that stage quite yet. I think this is a really great start though, I love the vibe and feel to this one!
I also love the artwork by the way haha. Where did you find the picture by chance?
But yeah man, pretty awesome work on these 2, especially for not producing for a while! I would keep at this man, well done.
