3D glass Sketch

Hi friends I am harsh magar today I draw this sketch

This is 3D glass Sketch.

To draw this sketch there are sum condition

1) You need 4B pencil when you use this pencil you get the soft and bright finish of sketch 

2) You want to use A4 bright paper

3) And you must be use HB pencil for outline

4) You need white pen ( whitenar ) for giving light effect on eye's

The link's of instruments for drawing 

pencils - https://www.amazon.in/INOVERA-LABEL-Professional-Drawing-Graphite/dp/B09FZHCBJ8/ref=asc_df_B09FZHCBJ8/?tag=googleshopdes-21&linkCode=df0&hvadid=544963491319&hvpos=&hvnetw=g&hvrand=10422710759765380400&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9299854&hvtargid=pla-1430957544878&psc=1

paper - https://www.amazon.in/JK-Paper-Easy-Copier-Sheets/dp/B07KDXJZPG/ref=asc_df_B07KDXJZPG/?tag=googleshopdes-21&linkCode=df0&hvadid=396988504026&hvpos=&hvnetw=g&hvrand=13046209233686141526&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9299854&hvtargid=pla-848802553620&psc=1&ext_vrnc=hi

white pen - https://www.industrybuying.com/correction-pen-cello-OFF.OFF.16370832/