Yeah, the Grue handles anything that's rejected or cancelled. Also, no worries or hard feelings on the submission. Everyone's gotta start somewhere, most first submissions (even those from prominent, established TASers) end up being fairly weak. My first recommendation if you want to continue TASing is, well, maybe choose a less complicated game than SMW to start out with. The game has a ridiculous amount of speed tricks that need to be applied all throughout every frame of the run, and it's not something I would recommend for a first-time TASer. If you have your heart set on it, you might be spending a lot of time (and I mean upwards of months or even a year) learning everything before you're able to make an SMW run worthy of publication. My second, and much easier, recommendation is just stick around the community! Support other runners, learn from what they do, maybe even join the IRC channel and chat with us if you want. We're mostly nice people. I only bite when people ask, for example.
om, nom, nom... blech, salty!