Answer:
use you pencil horizontaly and try to shade and then use you finger oy bud to look more better. :)
An Islamic construction that is a tomb, but not a mosque is a building called Taj Mahal. The Taj Mahal was build in 1631, and it still stands today. It was created by the emperor Shah Jahan. Today, the Taj Mahal stands in india. Below I have attached a pic to show you how the Taj Mahal looks.
I'm an amateur at digital art, so my suggestion may not be as useful to you. I suggest using the RCA Cambio, It's 32GB and comes with Paint 3D. It's also a laptop/tablet hybrid, so it's good for other things too. I got it at the affordable price of $120 at Staples
Thanks!
Your artist friend,
~Steve
Rounded arches are the main item for the building in Roman