Just recently I went for an essay competition I was disqualified not because I don't have good points but because I was not able to express myself clearly. I have interest in writing even though I'm an engineering student, I love to write, to share my ideas in writing, but poor writing skill is limiting me, so pls guys how can I improve?

Check my signature, there's an article I wrote that will help you on writing superbly

Your thoughts were well arranged in this post. I don’t see what the problem is.
I will advice you read books, journals and articles more. There are ways to string words which pull people in more, especially book readers. The only way to learn these is from reading.
Open a diary here, this will help you arrange thoughts in your head before putting them to words. Your first entries may not look so good but I guarantee by half the second page you’ll get the hang of it. It will also help in long write up-creation.
Finally, read more articles and discussions here. Some posters are gifted writers. You’ll see yourself unconsciously emulate their writing pattern whenever you create posts. Don’t forget to dabble in debates here frequently. They teach mental discipline over emotion.
Those are the small points I could give. They helped me over the years and they will do the same for you.
Nowadays nobody needs to become an expert writer, all that matters are the ideas you possess and can pass on to readers.

meobizy:
Your thoughts were well arranged in this post. I don’t see what the problem is.
I will advice you read books, journals and articles more. There are ways to string words which pull people in more, especially book readers. The only way to learn these is from reading.
Open a diary here, this will help you arrange thoughts in your head before putting them to words. Your first entries may not look so good but I guarantee by half the second page you’ll get the hang of it. It will also help in long write up-creation.
Finally, read more articles and discussions here. Some posters are gifted writers. You’ll see yourself unconsciously emulate their writing pattern whenever you create posts. Don’t forget to dabble in debates here frequently. They teach mental discipline over emotion.
Those are the small points I could give. They helped me over the years and they will do the same for you.
Nowadays nobody needs to become an expert writer, all that matters are the ideas you possess and can pass on to readers.

thank u for this, I will try to put it into practice