Size guide
Here is a complete size guide that will guide you in the search for the perfect format to decorate your walls.
The white margins
Left: with margins (A format), to the right: no margins (2x3 format)
Depending on the design, and whether you want it framed or not, I offer the option of having white margins.
For example, the design shown on the right will look better without margins once framed, due to the nature of the artwork. Whereas the design on the left will be enhanced with margins if you plan to frame it.
The choice is yours !