The exact details of the explosion mechanism of core-collapse
supernovae (CCSNe) are still an open big question in stellar 
astrophysics. To help constraining the CCSN explosion mechanism 
rich information obtained from modern multi-wavelength 
observations from young CCSN remnants must be exploited. 
However, there is currently still a missing gap between computer 
models of CCSNe and what we can observe from the aftermath 
of these violent explosions due to high demand of computing 
power for realistic simulations. In this talk, I will report recent
progress to bridge the gap between 3D CCSN simulations and 
observations, and discuss what we can learn from these 
studies.