I've never done anythything like that though I do occasionally make images in gimp or paint.NET.
I'm making one for a Tech ed. project right now. I'll post it once me and my partner are done.

What does bitmapping means? Do you mean drawing images pixel by pixel in an image software to make them convertable on calc later?

Ah ok. Well I actually did it before, but usually I modify the original a bit or I change its contrast/brightning and other things prior scaling it down, to make sure it converts well. In most cases just converting straight to 2 colors gave me poor results.

Let me find examples

EDIT:

Before (except I got rid of the logo by disabling layers in the emulator IIRC)


After

In that case I did not intend to make it like the original with the guy in it (notice how it's like completely gone), but rather make some sort of abstract image that looks like in a magic, dark place.



Before (the image is not supposed to be rotated like that. It's from Lufia II btw)



After




Now you know from where two of the ROL4ever title screen ideas came from.

Just to clarify, though, pixel art isn't converting existing images to a different size/palette. It involves drawing everything pixel by pixel yourself from scratch or heavily editing a scaled down image that way (for example if borders are totally messed up). In the current scenario it would be more image converting than pixel art. Also we can't send a bmp file straight to the calc: It needs to be converted to 8xi using TI-Connect or Image Studio first (I don't recommend the latter, because it erases the 96th row of pixel to the right)

Btw you might want to be careful to not click Post/Reply twice, because you often seem to double-post lately.

And for the images above, I have 4 levels of gray (black, white, light gray and dark gray). What do you mean by a reference printout, though?

Oh ok.  I think that would work unless the printed image was made of big squares in the first place lol. (I know some people did pixel art that way before, when they got ideas but had no computer or calc access for a long while)