The Beginning of "Playing Dressup"

I have been "starting" a new painting for my study titled "Playing Dressup" for a month now. I am stuck. Stuck, stuck, stuck! I sketched it on my large canvas using charcoal and I no longer like the composition I originally chose. For me, composition is EVERYTHING and I can not proceed until I figure out what setting I want for this little girl. Oh...what to do, what to do.......
(heavy sigh).....................