paint program, need help

[axipher]

A game I’m working on right now uses 16x16 sprites, so instead of designing all of the sprites myself, I’ve decided to add a sprite editing part so you can make your own, and now I come asking for help, here is the code I’m using, I’ll put it into the main program later or I’ll make a stand alone sprite editor and use the same loading system that this will use in the main program to load the sprite, I just need this painting part to work, I put quite a few comments to help

Here is a link to my code, since it won't let me paste my code:
http://fbtext.piczo.com/?cr=3&rfm=y

Now my problems are the following:
-> How to use the BSAVE and BLOAD
-> If there would be a way to save the picture you make as a file so this program could be a stand alone and then how to load it in my game which is also screen 13,,,1
-> A way to draw a line through user input
-> A way to draw a circle through user input without going out of the drawing area box

Any help possible is much appreciated

Also, I need your opinion on my splash screen, it's not much, but so far there’s 3 possibilities:





Just give your honest opinion on each one and suggest improvements on your favorite.