Since my laptop crashed, I can't show you the actual files of my digital paintings... but I DID take pictures of them on my phone before my laptop broke. So here's my purple sphere I painted in SAI, and a day later I painted the yellow cone! I can literally see tons of improvement!

By the way, you can't draw actual circles in SAI. It doesn't have a circle tool :1 So I had to draw my own circle.

The cone was sposed to look like it was on a table with a white wall behind it, and the shadow was going to extend onto the wall. If you were wondering.