Writing skills

Here you have the link to a website that will help you improve your writing skills
https://writeandimprove.com/

Here you will find a lot of activities for different levels to practise your writing skills
http://learnenglishteens.britishcouncil.org/skills/writing

From this website you can expect to gain a lot of tips and advice on writing
https://www.essaymama.com/blog/essay-writing-guide/