Hello, and welcome to TSC!
You won't need to show your pictures unless people doubt your times, in which case you can easily upload them on any image-hosting site like TinyPic and link to them there.
As for your videos, it's very good that you're making them. Feel free to link to them in the comments, and if you do particularly well one of the mods might authorise you and then you'll be able to upload them properly. (We normally just have the best stat vid'd, or one of the top stats at least)
But in any case, just make sure to have fun, try not to get too frustrated at the games, and don't BS :P Although I very highly doubt you will BS, considering that you've been asking how to upload proof for stats in your first post.