Well I was kinda wondering how a sprite could rain, like making stars rain for my upcoming game… If someone could help or show me a discussion that answers my question, that would be great!

well, you could make the raindrops have the scripts of bullets pointing downwards (you could use clones) or you could make the sprite have heaps of costumes so it appears to rain. i reccomend the first one. if you dont know how to shoot, just check out a space invader game or something. and lastly you could use gravity (also easy) here is an example of gravity, http://scratch.mit.edu/projects/11915874/

when green flag clicked
set [gravity v] to [0 ]
forever
    
if <touching [ground v] ?> then
set [gravity v] to [0 ]
else change gravity by -0.4
    
end

    
end

end

Not sure what you were looking for, but take a look at this:

http://scratch.mit.edu/projects/26100022/

I have functioning snow in this project https://scratch.mit.edu/projects/34722008/
You could use it to mak rain