Well, first, you need an image editing software. (I use GIMP)
2. 30 x 30 canvas
For 1 color backgrounds, use the paint tool. For 2 color backgrounds, pick the colors, then the gradient.
4. Take your sprite and save it
5. Go to "File" "Open as Layers" and take out your sprite
6. Use the Pencil, set the size to 1, choose your color, then write out the words
7. Choose another color, then outline the words w/ pencil
2. 30 x 30 canvas
For 1 color backgrounds, use the paint tool. For 2 color backgrounds, pick the colors, then the gradient.
4. Take your sprite and save it
5. Go to "File" "Open as Layers" and take out your sprite
6. Use the Pencil, set the size to 1, choose your color, then write out the words
7. Choose another color, then outline the words w/ pencil