Usually when promoting yourself in this way its best to have an extensive gallery of a variety of different units, paint schemes and painting techniques that showcase your talents as a painter, and to start your post with a sample of your quality of work. There are a great number of people who want to do commissions, but only a small number of people who do great commissions. To distinguish yourself and build a reputation of talent and reliability you need to be able to demonstrate ability to those you are promoting your skills to.
As it stands your gallery is rather lacklustre in terms of photography and variety. Try putting a white backdrop on some of your pictures to draw attention to the models rather than the rest of the image, try your hand at other armies and paint schemes and present photos of that.
Example:
Nice picture, good
TT standard but the photography lets it down
Counter example:
Again
TT quality marine, properly backdropped and giving a variety of views for effect
Finally, and this is only due to having seen a limited selection of your capabilities, it might be worth working on your painting techniques before promoting yourself as a commission painter, I don't regard myself as an accomplished painted but produce models of a similar quality of those in your gallery. Self improvement will enhance your portfolio getting you more interest and nicer commission jobs.