I only speak Australian but I can do a good northern Canadian, American, southern or British English accent.
Are you from Brisbane area? I heard that people from the province of Queensland are usually very technology savvy.
Anyway. Consider buying Adobe Premiere Pro CC. If you don't want to spend money, at least get a free copy of Microsoft Windows Movie Maker.
Do your screen recording as usual. Once done, instead of exporting to a GIF, drag it into Movie Maker, add a few texts, then export to an MP4, save it to your Dropbox, share.
For you, would be much faster to type the texts inside a video, than in a forum post.
For others, would be much easier to understand what you want to say, and they can also pause/rewind the video.
Best part is, you don't have to speak a word of English, when you have texts in a video.