I've included some helper scripts alongside these files. One version utilizes ImageMagick
for operations (which you'll need on your PATH)- one does best effort with built-in
Windows functions (no dependencies, but it can be quite slow to trim large images). I
might see if I can support Linux/Mac at some point but this is super low priority. You
don't need to use the scripts, and of course review them before using. There are various
checks that make sure you aren't missing anything, and there's a handy _config.txt
generator if you're going to batch-submit me banners over e-mail. Run your chosen script
inside of the banner's content folder (gameLogo.png etc. alongside).

Here's a quick explainer (also good if you want to do stuff manually):
 - It checks existence and dimensions of all images that are used as-is and warns if anything is amok
 - It tells you if there is no WadderMainSmall (icon logo) and that gameLogo (banner logo) will be used for these purposes instead
 - It has a look at the logo(s), and if it's not within 416x187 pixels (my personal safe area dimensions for the logo), it trims (akin to GIMP's "Crop to Content") and resizes afterward to fit these metrics
 - If you're curious how I came to these values... gameLogo.tpl is 446x307. Minus 30 (15 left, 15 right) for the width, minus 120 for the height (60 top, 60 bottom)- it gets padded back out to 446x307 by my build script
 - I use these same values for WadderMainSmall.png even though this is much higher resolution than needed for it (TPL generation targets the true expected resolution of 98x58 pixels at build time)
 - It checks existence of jingle.wav and warns if missing
 - It offers to create a _config.txt if it doesn't currently exist (don't bother unless doing a batch-submission via e-mail)
 - It offers to create the zip file for submission

I've also provided a PSD file that approximates my preview template generation. It's
899x456 to simulate the 108%~ stretch that happens on the Wii. This was generated with the
paint.net plugin, so it should be quite compatible with most programs that support it (no
advanced features). Most programs support some level of PSD natively, and the ones that
don't usually have a plugin available. I can offer it in a different format for you on
demand if needed. I just don't want to bloat this package any more than it is!