I wouldn't worry about owning your own domain it's not really a big deal - just don't use a flash based site that takes forever to load images your lowpoly versions like already mentioned look to have a lot of useless edge loops that could be done away with the formula 1 WIP head looks a tad on the big size compared to the…
Your sculpts are really nice and the website is clean and tidy. Maybe you should consider buying your own domain if you will use this website when applying for jobs. Like you say yourself the textures need alot of work. That beauty render looks like a good start in Zbrush(if thats the sculpting software you use) blocking…