Kirby859 wrote:compression gibberish
.jpg (1005 bytes)
.png (282 bytes)
And that's 95% compression on the .jpg (compression here kinda works in the reverse, 0% compression looks like a blob but 100% looks, until closer inspection, like the original)
Point is .jpg just look bad unless you have a large image like a photograph or digital painting with lots of Anti-aliasing (something to smooth the edges) and what your doing isn't that big and has no AA.
It's obvious that your just starting out. Everyone's been there. *coughhttp://i.imgur.com/NcaKTD4.pngcough* Good news it at least you took the lighting into account. My suggestion to you is to clean up your lines. Your star is hardly symmetrical and while the lighting is done more or less properly, everything is still flat and uninteresting.
Also I should note for future reference that you are using what's known as "pillow shading" on the balls of light there. Pillow shading is a mistake that most artist make when starting to learn about lighting as it assumes the light is directly in front of the viewer. In this case it's fine as it seems the balls are their own light source but it's something that should be avoided in virtually every other object.
Also just remembered. MSPaint is a fine program for spriting guys. I know even I talk about "ew MSpain" but in all honesty it's got all the required functions and in the older version it practically forces you into making sprites. Though I would recommend a more powerful program, GIMP is pretty much photoshop but would likely be too much of a leap from MSpaint as I myself haven't even uncovered it's secrets. Graphics Gale is a great program for pixel art specifically and while not as confusing as GIMP it's still a bit of a leap and is only really good for Pixel art. What you probably want is Paint.net. It's pretty much MSpaint but with all the cool kid stuff like customization pallets, image effects, and plug-ins. And if you want to do pixel art just use the pencil tool or click this symbol

to turn off the AA (all the fuzzy stuff that comes up when you use a brush or make a line)
... wow this got longer than I thought it would be.
Guess I'm bored. nah I just hate seeing artist not getting the help they need.