These are old traditional sketches. A few have been tweaked to compensate for bad scanning. Ever since that time my sketchbook was stolen when I was in my mid teens (bjpentecost.deviantart.com/art…), I haven't been able to keep a sketchbook since. These were all ripped from one of those failed sketchbooks. I'd tear out so many pages that eventually, I was left with nothing but the front and back covers.
:origin()/pre00/dece/th/pre/f/2016/258/7/9/boot_to_the_head_by_bjpentecost-dahqemz.jpg)
:origin()/pre00/7da8/th/pre/f/2018/241/4/7/acetaldehyde_brownies_by_bjpentecost-daekmz3.jpg)
:origin()/pre00/72b8/th/pre/f/2018/241/9/3/secondhand_nitrogen_triiodide_by_bjpentecost-da8gtlo.jpg)
:origin()/pre00/7731/th/pre/f/2018/241/9/5/fluoroantimonic_acid_smoothie_by_bjpentecost-dahm6ro.jpg)
:origin()/pre00/06eb/th/pre/f/2018/234/a/2/rainbow_cachobie_gryphette__old_version__by_bjpentecost-dafcruv.jpg)
:origin()/pre00/b8ae/th/pre/f/2016/229/1/0/death_by_chlorine_trifluoride_by_bjpentecost-dae8kmx.jpg)
:origin()/pre00/bb2e/th/pre/f/2018/241/b/c/spaghetti_in_a_blender_by_bjpentecost-dadri1z.jpg)
:origin()/pre00/5345/th/pre/f/2018/232/6/b/tree_gog_by_bjpentecost-d9xf3ki.jpg)
:origin()/pre00/9970/th/pre/f/2018/240/1/1/which_way_to_albyr_corakei_by_bjpentecost-daapxbv.jpg)
:origin()/pre00/e8a7/th/pre/f/2018/241/0/8/tert_butyllithium_heart_by_bjpentecost-d9xmsf5.jpg)
:origin()/pre00/bcaa/th/pre/f/2018/246/c/a/suxamethonium_chloride_a_la_mode_by_bjpentecost-dauxfq9.jpg)
:origin()/pre00/7f02/th/pre/f/2018/232/8/1/so_you_think_you_can_take_me__by_bjpentecost-dadd9vy.jpg)
:origin()/pre00/35f5/th/pre/f/2018/037/8/1/post_cataclysm_flora_1_by_bjpentecost-dc2cydw.jpg)
:origin()/pre00/5719/th/pre/f/2018/037/e/8/post_cataclysm_flora_2_by_bjpentecost-dc2cyr8.jpg)
:origin()/pre00/3c39/th/pre/f/2018/037/3/3/post_cataclysm_flora_3_by_bjpentecost-dc2cz89.jpg)
:origin()/pre00/f8e1/th/pre/f/2016/119/f/a/a_dream_i_had_by_bjpentecost-d9nlzt9.jpg)
:origin()/pre00/adc6/th/pre/f/2016/251/2/6/cyrix_work_in_progress_by_bjpentecost-dagy1uz.jpg)
:origin()/pre00/7412/th/pre/f/2018/260/6/1/living_metal_by_bjpentecost-dcbb8gt.jpg)
:origin()/pre00/db34/th/pre/f/2014/188/0/3/lily__goldwing_dragon_by_rosepeonie-d7pmotr.png)
:origin()/pre00/f395/th/pre/i/2014/175/7/9/belle__goldwing_dragon2_by_rosepeonie-d7nr627.png)
:origin()/pre00/99cb/th/pre/i/2016/263/3/1/closed_chibi_adopts_batch_by_alouestadopts-dahqjue.jpg)
:origin()/pre00/7944/th/pre/i/2016/258/6/5/under_the_sea_by_paintedchaos-dahqjee.png)
:origin()/pre00/eeed/th/pre/f/2014/241/0/6/aurum_goldwing_dragon_by_rosepeonie-d7x5iky.png)
:origin()/pre00/f4c7/th/pre/f/2016/258/f/b/fb957775e9153c6e407fc9f66b532fe8-dahqixo.jpg)
:origin()/pre00/e5ab/th/pre/i/2016/154/b/4/sketch_dump_livesteam_by_i_am_bleu-da4uuly.png)
:origin()/pre00/cf5e/th/pre/i/2016/128/5/5/mini_notepad_nicecream__monster_and_burgerpands_by_i_am_bleu-da1ru5i.jpg)
:origin()/pre00/28b9/th/pre/f/2016/001/5/3/he_by_cyaf-d9mdr3q.jpg)
:origin()/pre00/4b6c/th/pre/f/2016/258/7/e/antiquated_meanderings_by_bjpentecost-dahqjgo.jpg)
And some of these has very skilled detail work.