Well buddy, it seems you are extremely new to programming.
create each image with mspaint, photoshop, paintshop, etc. Whatever image editing program you have. Save them to your projects directory. And load them into blitz with either LoadImage, or LoadAnimImage. And if it is a bmp (which it should be) with a transparency color, use MaskImage to whatever color it is. And drawing each image is either DrawImage, TileImage, or some other variation.
create each image with mspaint, photoshop, paintshop, etc. Whatever image editing program you have. Save them to your projects directory. And load them into blitz with either LoadImage, or LoadAnimImage. And if it is a bmp (which it should be) with a transparency color, use MaskImage to whatever color it is. And drawing each image is either DrawImage, TileImage, or some other variation.