Would love to see some videos of you playing with the kick! Few people have really used it much. :)
I'm thinking of changing the kick so it gets easier to use. Perhaps add a standing kick and change the current double jump summersault to some more standard form of air kick. Could also be fun to make a powerful flying kick by combining it with the jetpack.
I haven't actually tried the kick ---> jetpack forward myself. Do you find that useful for enemies that get up quickly too?
Just upload the .mp4 file to any video uploading website. Unfortunately, I don't have much experience with uploading content, but I'd assume YouTube would be pretty simple to get started on (well, assuming you already have a YouTube account, which, if you're already associated with Google, isn't an issue).
What you're looking for shouldn't be hard to find. I just Googled "mp4 to gif" and came up with a ton of results, like http://ezgif.com/video-to-gif, http://www.zamzar.com/convert/mp4-to-gif/, https://convertio.co/mp4-gif/, and more.
