Welcome to the Shipbucket. The drawings You've posted here in several threads look nice (though I'd say that the chinese submarines have too many elements/lines drawn in black while we usually would rather use dark grey - or some other "dark" color depending on the background).
P.S. Btw. the P-36/-40 family is for a loooong time waiting in the pipeline - one Artist (who is no longer active there) made a blanks (non-painted ones), which eventually found their way to Nighthunter, who is sloooowly doing the paintschemes.