Here is the the Mega Man 3 artwork. I just matched the screen to the background location and dimensions. Feel free to make adjustments to the lay file. I have the Castlevania II unit done, I'm just waiting for a scan of the front label.
Ninja Gaiden III artwork is up. Hydef did art for most of the Tiger games but not a background only view. I've redone all the backgrounds and added this view for them. I did a few additional games such as Addams Family and the legendary MC Hammer: U Can't Touch This. More on the way. The lay files all need work but I've put everything as is in my Tiger folder:
I put together some artwork for the Konami baseball game. It has a few different titles and labels. I did a quick mockup for the US version called Major League Baseball (left). The unit that was scanned is the Japanese version (on the right). The game in MAME is called Bottom of the Ninth which was released in other territories. If anyone has a good scan of the US or Bottom of the Ninth versions, let me know. I'm not amazing with the lay files, so if anyone wants to help out with those, let me know.