well the brush is very clean and fresh
your really improving fast
one thing you need to work on from this point on >
proportions and perspective (angles)
the car is great but all proportions are like off also some perspective issues
some examples
proportions >>
1. steering wheel is tiny and thin ,
2. roll cage looks very thin
3. the car actually looks short and high as where a rx-7 should be longer and lower (roofline) , best said have a sleeker look
perspective >
1.the front end and rear end seem too be difefrent perspective wise
2. rear wing looks off
3. wheel positioning can be better
4. bonnet vent is off angle
i'm calling these things because like said your really improving so fast..
imo these things are very usefull for you
also people call pro and imo its getting in that direction if you continue like this , but some things just need a tad more attention
anyway imo a really cool chop of this base ,we all know its not the most easy base
you brushed it witch is harder also ..
so great job imo