You should be able to download immediately after purchase, however in some cases a few minutes are required to confirm payment (it should not take longer than 10 minutes). Here is a great article on how to download your prints https://www.etsy.com/help/article/3949

Your custom orders will be sent within 2 business days (usually the same day of purchase)

You can request any size you want for an additional cost, some prints are not resizable so please contact me prior purchase to see if the print you want can be resized. You can look at this link for the most common print sizes: https://www.etsy.com/shop/kiwiNberries?section_id=18189578&ref=shopsection_leftnav_7
Also, you can resize the prints yourself using an editing program such as photoshop, however I do not recommend enlarging them because they will lose quality.

You can print the files at home using a high quality printer or take them to your local printer lab.
Uploading to an online printing site is the best choice to obtain great quality. You can try doing a quick google search for "online printing" and see which options are available in your area. For the US; mpix.com and shutterfly.com are the most common.

I recommend a high quality cardstock paper with the following characteristics (in order of importance)
- Heavyweight
- Matte
- Super white (natural white)
- Smooth surface
- Acid and lignin free