Good workout routine?

[Sarah]

I AM ALREADY SKINNY. Im a girl. I just want to be toned and have flat Abs. Do you think its possible by July and should I even do cardio ? Btw I do yoga everyday

M- Cardio, Legs
T- Butt, Arms
W- Cardio, Legs
Th- Butt, Arms
F- Cardio, Legs
Sat- Cardio, Butt
Sun- Rest