At the bottom of the Post Reply page is a place to Add Attachment. Click on Browse, select the picture from where it is on your computer and add attachment. The "Allowed Extensions and Sizes" will tell you how big it can be.
I'm not a techie by any means. I hope this is enough to help.
"Trust the pattern!"
Time flies like an arrow, but fruit flies like a banana.
Hop aboard while we follow the cloud-covered van of knitting harmony, man!! Woooo!! --Hedgehog
IngridKH on Ravelry