Hi, I am man with van. It's possible to make remove work in Spain

Yes but there are many people doing this and you will need full insurance for everything in your van!

If your prices are competitive I can't see why you can't make a go of it, I see adverts most weeks from people enquiring about removals, good luck

Do your homework 

Adequate insurance,  autonomo, accountant etc. 

Not worth doing it if you're not fully legal,  the Guardia Civil  stop vans on a regular basis to make sure they have all the correct documentation and have legal paperwork to run a business.