proper good real work.
there is a big problem for you though.
I suggest that since you've been doing work and improving (naturally ) since ...don't stop ever.
It'll feel like you've amputated a body part if you do (even if it's for a short stint) ...it's seriously like some important part is missing.
As well if you stop...your ability...it is like a muscle...it will weaken...so keep your ability honed and sharp.
If it helps any...I noticed you mention pastel.
your sketch ability is good...if you can keep it light and not get caught in the detail too soon...I imagine how you are accomplishing your work is the initial sketch also ends up being your finished work.
Before you get too tight into laying depth and alotta graphite down...a rough sketch and then straight oil pastel on top ...you can use your hand edge, finger-smudging...finger-nails (great for emulating texture) , proper knife or brush ...fan brushes are the best for blending...so...easy-peasy ..you can lay down solid bands or grades of colour or monochrome white-pale grey-mid grey- dark grey -black (as example) side-by side ...pull out your fan brushes...don't use turps. (turpentine) ..it thins ..but it is FAR too muddy for my liking...use VARSOL ...it isn't yellow like turps. it's clear....wet your clean fan brush with varsol and brush it into the oil pastels...right over each solid transition division over colour or tone...and ...POW...INSTA-perfect dimensional blended oil painting. It dries quick too.
Wipe fan- brush of paint and repeat wherever needed.

Just don't mistake it for a glass of water on your table.
Oil pastels are way stupid cheap compared to pastel pencils or oil paints or acrylic paints or watercolour paints..which are great...pricey ..but great...especially for fine fine work..but which lack ....something...I can't put my finger on it.
Anywho ...... drop the fancy expensive pencils water colour pencils..pastel pencils.......In university we used to rib the new kids for buying that stuff....you don't need them.
All you need is a few varied H's and B's that you personally gravitate to. Anything fancier and then you enter the realm of the expensive prop....art stores sell ...to milk the unknowing of their coin.
You are good.
Plenty good.
Step up the game man.
More beautiful than the last.
More complex than the last.
More simple than the last.
More refined...
More primitive....
More and more.
Better than the last .
I know you got the bug man
I see it in the work.
Hehe I know the bug.
Most important thing now is...Just don't stop ever.