Was that meant to be a horse, or did you just scribble until you ran out of space?

How to say “Was that meant to be a horse, or did you just scribble until you ran out of space?” in Japanese

In Japanese

これ、馬(うま)のつもり？それとも場所(ばしょ)がなくなるまで落書(らくが)きしただけ？

Kore, uma no tsumori? Soretomo basho ga nakunaru made rakugaki shita dake?

Was that meant to be a horse, or did you just scribble until you ran out of space? in other languages