For every day wear I would make it a little shorter in length, but for special occassions I think it's perfect. I don't think it needs to be any thicker because the colours aren't on the stronger side.
Wow, that looks beautiful on your eyes! I like this version of the cat flick, but for a more retro pinup style one, maybe shorten the flick and wing it more upwards so you can thicken it gradually towards the end. ^_^
You look so pretty, as usual!
Coming from someone who does e/l like this every day.. you did great! It took me sooo many tries to get it this good, you did awesome for a first try! I think it looks perfect, there are so many variations of cateye liner though like some girls mentioned above ^.. you can do it thin, thick, short, long, etc etc. depending on the look you want
Pretty look as always