If you go about it in the right way, SEO can help boost your site's search engine rank. You might be making the following mistakes that usually affect an SEO campaign.
From an SEO point of view, it doesn't do you any good to fill your pages with eye-catching images if there's little written content present. You can certainly use images that improve the way your site looks, but keep in mind that they don't help much from an SEO point of view.
Instead of that, you should try and get more unique content that not only helps the readers but also gives the search engines a reason to rank you well. There's nothing wrong with using images, just don't overdo it. Don't overload your site with unnecessary images that will slow down your site and not help the search engines much when it comes to ranking. One thing you should always do for the images you do want to use is insert important keywords in the images' ALT tags. This gives the search engines a way to see your image, or at least the tag that accompanies it. The best way to deal with this is to try and replace most of the images with something that's worthy to read and also has your keywords in it. Search engines love written content, which is why you should keep it in mind all the time.
One costly SEO mistake you never want to make is plagiarism, or taking content that doesn't belong to you. It's not worth it to take something created by someone else and claiming it as yours, as this will only ruin your site's SEO and the creator of the content could sue you. The search engines favor those sites that keep their content original and high quality. They want to help their readers discover the best content, which is why you should try to keep the content as unique as possible. If your content is caught by the search engines' duplicate content filter, it will be excluded from the results. What this is searching for, however, is duplicate content on a single site. If you've legitimately taken an article from somewhere and given them the credit, there should be no problem. The general idea is to be truthful and up front in your efforts.
Don't make the mistake of creating backlinks to your site too fast. This is a surefire way of getting the search engines to become suspicious of you. Your aim here is to create backlinks to your website in a natural way, not by doing it at a super human speed. Engaging in this type of action causes many sites to get their listing removed by the search engines. The search engines look out for sites that get too many links in a short time, and this shows them that you are using some kind of blackhat strategy. This is the last thing you want when you are attempting to improve the ranking and credibility of your site. In summary, if you manage to not make the kind of mistakes mentioned in this article, your SEO campaigns will run much more smoothly.