Icon design irregular shapes, snap to picel

[lister110]

Hi, I'm designing some icons. Some shapes are irregular and have inner shapes within a filled icon. Although some points are snapped some can't. When it comes to curves etc. what's the best way to achieve sharpness. I guess you're constrained to the shapes in some parts.

lister

[Doug A Roberts]

Perfectly sharp lines with pixels can only be achieved on horizontal and vertical lines. Can you show the parts you're having trouble with?