Hi Briony,
I understand how you feel, I was in the same situation a few days ago. Total newbie, don't even have a decent camera - yet [in the process of getting one] and all the photos I have are either shot using my mobile phone cam or my old Kodak EasyShare camera.
I have absolutely no knowledge of photography, except 'point & shoot' and basic editing. But I have a passion to persue photography, not only as a hobby, but eventually as a career (and I think that is what drives me at the moment).
When I first joined, some time last week, I was so frustrated because I couldn't even figure out how to us TP let alone upload photos. But with the help of the fantastic peeps here, I did it!
I was a bit aprehensive at first to uploading photos, with the same thought you have about 'not being good enough', but I thought 'what the hell' if I can't post them here for my learning experience, then where?
I was ready to throw in the towel too, and look for another forum, but with the moral support, encouragement and valuable information from fellow members I am now really enjoying this forum (and won't be looking elsewhere - besides I wouldn't have the time to look at any other forums because TP already is so full of info that I wouldn't have the time to spend on any other

)
I am so looking forward to learning here, and now the first thing I find myself doing in the morning when I wake up is sign into TP,

you might think, but I love it.
Soon I will be asking loads of questions when I get my new equipment, and you know what ..... I don't care how stupid the question might be (especially as I am not familiar with terminology) so long as there is help and an answer that is what counts.
I have read each post in this thread and I would just like to extend a sincere thanks to all the members encouraging words. You are a fantastic bunch
Thanks, Briony for starting this thread, it has been encouraging.
Take care
Dawn
