paphiopedilum lowii and coelogyne mayeriana.... the pic is supposed to depict coel. mayeriana, but i accidentally wrote the name of pandurata at the bottom... hehehe...
Your drawings are all quite fine. Have you ever tried Prismacolor pencils? Berol makes some nice professional-grade ones. Since you're not into painting that'd be a decent way to add color if you ever feel like it.