Wotcha, I'm crap at painting someone else will surely comment soon (I think they look lovely).
They might turn up quicker if you posted in the painting forum (
painting-modelling/)
Would you like someone to move it for you?
On here, you can either
a) directly upload up to 3 pics into each post (the bit beneath the box with upload attachment). This is handy if your making a thread thats like a blog.They will however only go at the end of the post, you can't embed them in the middle of text etc.
or
b) use the gallery and after uploading to it....
i)in posting click "img" box(I'm not really used to)just auto wraps code around the location of your pictures which you have previously copy link locationed using your browser.
or
ii) use g2img which babysteps you through.. click it, it opens a window explorer of the gallery,find your folder, tick the pic you want.. then go to the top right and choose what kind of pic you want (I generally choose full image with link to gallery) then go to bottom and click submit.. you can do this for several images at once, so its handy if your wanting to show 18 pictures in a post.
If you click quote you should be able to see the code its used (I didn't type it the two posting buttons do that), theres probably a load more.. but those should work for what you want