It is also possible to incorporate other medium for example the use of stencils with decoupage to produce a clean cut image. More expansive ideas using paint, pasel, or indeed any other medium could be incorporated.
One of the interesting learning processes with decoupage is the ability to a) keep it simple, and playful. b) think in terms of rhythm and balance, by placing the cut outs on the support first, it is possible to play with these ideas before committing. If you have over-egged it, then it is possible to rescue it too, see below.