To re-upload your artwork to pixiv from Pastela, you need a subscription to either Pastela Plus or pixiv Premium.
If you are already subscribed to one of these services, you can follow these steps.
*You can only re-upload artworks that you previously posted to pixiv through Pastela.
- Go to the canvas page, select the artwork you wish to re-upload, and tap "Re-upload to pixiv".
- Tap Post to finish re-uploading your artwork.
*If you want only the new image to appear in your post, make sure to delete any old images from the top of the page before re-uploading.
For more information on Pastela Plus and pixiv Premium, please see below.
What is Pastela Plus?
What is pixiv Premium?