Nice idea, i would remove the lips you've drawn on, and instead draw an outline around her original lips to look like a sad face, that would be more effective than simply painting over her lips. Good luck!

simply 2 mutch digital, u can try down with opacity to fit on face but any way i dt know what u where trying but 2 me too mutch digital good luck

Ponti55 makes a good point about the makeup on the lips. But, this is accurate in that clowns usually don't usually paint their actual mouths into a happy face. The mouth is drawn on the face as you have done here. Not too bad for a newbie.

This is cute but there are some clown face painting tutorials online that will really make this image pop...

Creative, but it doesn't look like real makeup, and you can see the actual mouth behind the painted one.

you should experiment more with the blending options. find a good tutorial and follow it. it's a good idea, but poorly executed.