>>7681066
Yes (might have skipped one or two), and yes. I will forever recommend this book. Observational drawing is so important. It's the first book an aspiring artist should read.
>inb4 pyw
pic rel

>>7681192
You're drawing digitally - you can mess up and undo forever. There's no reason to be scared. If you can't figure it out right now you can move on without showing your drawing to anyone.
Use references.