Set Blending Options/Stroke with the same parameters presented below:

 



Next we shall draw another heart inside the first one that we have already represented.



Select Gradient Overlay for it with the same parameters, but this time we need to fix the Scale option on 150.

 



Draw another heart, bu smaller one and place it the same way as the next picture indicates it:



Blending Options\Gradient Overlay:



Set the colors exatly the next codes indicate it.

 



We need to apply Stroke option for the last heart too.



It’s the picture we need to get on this stage: