I'm still new at using this technique and new at making art quilts. I can learn from others who are more experienced.
I bought the pencils from Michaels, but the selection was limited. I was only able to get 12 of the Inktense pencils and would like a larger box. Dick Blick would be the place for more choice. I really like the Derwent Inktense pencils for vibrant color. The ink is also permanent after using the gel. I am combining both watercolor and Inktense on the same project. I haven't used fabric medium for setting the watercolor. I have a bottle, so I will try it.
I have heard that any colored pencil will work, but the ordinary ones I tried weren't as good as the Derwent. There are probably other brands that work, too. I just haven't tried any.
You can get the aloe vera gel (clear, no perfume) from Walmart.
I did prewash the muslin to remove the sizing and chemicals, so there is no hindrance to the color going into the fibers.