I'm a skilled illustrator, expert in Adobe Illustrator and Photoshop. I worked for European companies for a few years before, redraw logo/illustrations to a quality that can be used for production, meaning clear, resizable and in high resolution. I just checked the mac emoji, lots of them are using gradients, so there are some ways to recreate them, if you choose me, I will work to give you options, how the emoji will look like as standard, very simple or more detailed with gradient. It has lots of emoji, so I'm trying to be realistic here with the time, because I don't use auto trace tools, which is fast but not giving the best results. I'm new here, but I believe I can do this job. Thanks!