Thay are a little good.
But try to use some different smoke "animations" isndtead of just 1.
They also some bad overlapping.
So, make something good and show us that.
Cuz I get a bad impression of your skills when you start with saying that you made them in 5 mins.
Show us something that you have made that is good.
(So we can see waht you can manage...)
Nothing wrong with you or so. Just saying that it would be better if..