i tried my hand at a mock-up of the instagram embeds, it's not perfect but i think it comes close, and i made it as simply as i could, since i would have confused myself if i tried to make it too exact!
this should be really really simple to edit! the only things you need to change is the userpic, the username link, the picture itself, and how many likes/comments you'd like for it to have! the width and height is easily changed, as is the color of the border. and that's it :) i hope this is useful for someone!
the 'instagram' logo is a link to my journal, i only ask that you leave that there! :)
picture border: #d1d1d1
( live preview! )