Even though this is not that much of an original idea, I like the small character, I like the fact that the sky gets darker when you go further, I like that the athmosphere gets more serious when you go higher, I like the little scoring system, the life system, the fact that when you respawn you dont just appear but you actually have a small golden cloud, etc...
But all in all it still really lacks a lot of things. Like, an objective to work to, or even an incentive (even though seeing that the sky got darker made me wonder just how much more it could change, I would like for an actual objective to exist)
No sound is of course a disadvantage (although it's better than bad sound), the gameplay is still too basic (could use things to make it deeper and with more content, such as upgrades/powerups/consumables/anything that you would prefer but something) and the controls could use a bit of work, etc...
All in all still needs a lot of work to become a really enjoyable little game, but I can feel that you want to make it become better, and I like that :) keep it up