Finally found time to play your game. Interesting concept, but it took me solid 10 minutes to really understand how to play the game. After that it was quite easy to finish. It just took forever because the movement is a little to slow, as already mentioned by others. Also the aiming was a little problem because falling "off" is way too easy.
According to your game mechanics. I don't really understand the need of running around on the planet and clicking on the flower. It basically doesn't add any challenge to the game. It just makes the game longer for no reason and a little annoying.
Maybe add a little variety to your planets.
Some more sound effects would have also been nice, but there isn't much going on which could need sound.
But overall nice game idea. Would love to see what you could make out of this in the future ;)