Lyndsey Longden

Hi all, New to the forum and to self-assessment. I have a couple of queries that I would really like some help with getting my head around if possible before I register etc-thank you in advance. I have been buying and selling second hand (and more recently wholesale) clothing for just over a year. My end of year figures are-£1974.01 (gross), £810.71 (expenses) and £291.81 (donated or own stock). I am unsure how I would reflect this, particularly the 'donated' (given to me to sell by family) or own stock on the form. Also, and I realise this will sound a really silly question, but just to get my head around hiw this works. On paper, taking off my expenses and 'own stock' sales I have made £871.49 net- so this is what I would pay tax on? I think what I'm getting at is do I pay tax on this amount or is it below the £1000 trading allowance-is it either/or? I hope that makes sense and thank you in advance for any advice you can offer.