Welcome.

Sorry, I dont have time to make a full tutorial like you requested, but I can give you a quick tip.

I only zoom in after I've drawn the basic shape of something. If I'm drawing a mountain, I'll be zoomed out, make the basic shape of the mountain, add some simple shadows, then zoom in too add the details.

Same thing when I draw with lines. I'll make a basic sketch while zoomed out, then zoom in to add the fine lines after.

Hello, thank you for reply and for the tips. your drawings are so beautiful i hope to know some step by step lessons to learn how to draw but i dont know where i can find that info in internet, can you recommend to me some?

And by the way, in your drawings do you use the normal Stylus size? or the Stylus XL/LL?

Im waiting for Art Academy Lessons for Everyone 3DS just right now meanwhile, but after that, i dont know what else to follow to be a nice illustrator/painter.

In some drawings im watching that some users are using the Eraser to smooth the paint to make it in an opacity look, so that kind of tricks i wish i can know it too.