I present you with proof of previous success with freezer paper stencils.

Exhibit A: hippety hoppety (on muslin)
Now, I present you with proof of current failure.
Exhibit B: the ruined onesie

Exhibit C: 2nd attempt on muslin (Can you hear my head banging against the wall???)
There are three more like this but I'll spare you and myself detailing them. Last night was an evening of total craft frustration. I'm not quite sure what I'm doing differently but clearly I've lost my touch. I'm obviously using too much paint but I'm not certain how I could use less. I wonder if scale has anything to do with it? The bunny above and all my other successful stencils were quite large (about six inches tall) while the current stencils are only an inch to an inch and a half across. Or perhaps it's the way I'm applying the paint? Maybe I should pitch the sponge and dig through our utensil drawer to find the stencil brush Dan saw fit to use as a pastry brush awhile back (don't ask). If anyone has any suggestions for making this work, please, PLEASE, send them my way.
On a more successful note, I'm headed to the post office with some packages after Astrid wakes up from her nap this afternoon. Better late than never, I say. One thing though. Those expecting packages from me should know that I opted for simply mailing things over mailing things that I've made just so. There are no cards or fancy wrapping. Remember friends, it's the thought...

Edited to add: I'm going to assume the paint is the issue despite the fact that I've used this particular paint successfully in the past. I really don't think it's the type of fabric. That just seems a less likely culprit to me and again, I've used both knit cotton and cotton muslin successfully in the past. I guess while I'm at the art supply store, I'll buy another stencil brush as well. Using something that's been dipped in egg wash and olive oil just doesn't seem wise no matter how well my husband insists he washed it.
Oh, and applique is definitely the answer for salvaging that onesie. I just have to decide what it will be. An appliqued elephant, perhaps? Or maybe I'll steal Angelique's abstract balloon/flower/lollipop idea.