NEVER upload an SMC, as that is illegal to do. Only use IPS files.
And yeah, just upload it to your file bin and use the download link from that (right click the link and select "Copy Link"/"Copy Shortcut". Professional frame-by-frame time wizard. YouTube - Twitter - SMW Glitch List - SMW Randomizer
Just so you know, SMC files are not allowed. The only time an smc file is allowed is if it contains no copyrighted content (example: a game you made from scratch that is not a hack of an existing game, nor contains any elements of an existing game). So in your case, no, you have to use ips.