It is very helpful to develop many different versions of these graphics as a way of making them better and better and we want to encourage that.
At the same time, we have to be careful of overwhelming the web structure with lots of large MB graphics.
Please try to generate everything as JPGS that are 250k or less. For those that get to be super-well-refined we can find a plave (or store here) mult-megabyte versions.
There are art websites, free storage locations, etc that can be used for this. Anyone who has experience with that or who wants to take the lead in finding locations where files can be stored and then we LINK to them - which is optimal - please let us know and we'll make sure those instructions are easy to find and follow.