Good model, but usualy u don't re-enter head on like that or you burn up. The Idea is to have a huge surface area that slows the ship down as quickly as possible after hitting the atmosphere. A stramlined shape retains its velocity of several km/s for longer and is therefore more likely to burn up. (faster=more heat)
Congrats, you have developed... a piece of metal that does not burn, tied to a model ship. +1 for the model ship, but the "heat shield" is, in my opinion, worthless. Real heat shields would need to withstand melting temperatures.
if you make the back row of CLNE create OXYG, it burns a little hotter
I "accidentally" melted off Jeb's face with a nuke (only his face melted).
if this ship hits to much air preasure due to turbulence the tungston brakes off making the wind sheald very thin :) +1
Of course, only Jeb would go full prograde during re-entry.
but tung is OP doesn't melt