I'm still using Draw Studio 2 through WinUAE for this type of stuff. Great combination of bitmap and vector based drawing. It's actually quite powerful so test it out before you start laughing. You'll need to organise font and bitmap conversion to/from Amiga friendly formats though.
http://www.haage-partner.de/com/products/ds_e.htm
http://www.haage-partner.de/com/products/ds_e.htm