Attaching a decoupling capacitor to PCB. What should go where?
You have the decoupling capacitor connected to the correct pins on that IC, that's for sure. However, it is a good rule of thumb to have a decoupling capacitor as close as possible to the pins on the IC it is decoupling (for one source, look here http://www.capacitorguide.com/coupling-and-decoupling/, though nearly every article you read will talk about how they need to be close to the IC). 

However, if your board needs to be single layer and/or it needs to be that size, I wouldn't worry too much.

What capacitance have you chosen?