Hi-
For images to post they need to be no larger than 700 pixels on the largest side. Then use the Insert Image tool under the picture frame icon to add it to your post.
BTW- Growing Phals in sphag moss at home is quite challenging for most of us. Many of us use a bark, perlite, horticultural charcoal mix for most orchid types including Phals. Orchids do most of their breathing by the roots so we always like to give air room to get to the roots. Bark mix helps accomplish this more so than sphag.