Here’s another tip!
Your page count is very important. Very important, especially when it comes to a first issue.
There are things to understand: your reader is going to expect a certain amount of pages for the money they’re paying. While 22 pages has become the standard to comic book storytelling, it’s not the only number it can be. It can be more (and often is for a first issue), and it can be less.
However, when it’s less than the standard, you have to make the page count a gimmick. Here’s what I don’t want to see: a first issue that has 16-18 pages, and then a second issue with 22. That’s terrible. That means you don’t know how to tell a story within the medium just yet. It more than likely means your structure is unsound, and that there are things missing from your first issue that should be there. You want to give the reader the impression that you know what you’re doing, and not the opposite.
Of course, when I’m talking about 22 pages, I’m talking about story pages, not the total page count of the book. You can have as many pages in your book as you want, as long as the pages are divisible by 4. (This division is for printing purposes, and most of us are thinking about print books. If you’re making a webcomic, then this isn’t for you…unless you decide to make a print version of your book.) There may be ad pages in the book, there may be backmatter. There may be “extra” space that you have to fill at the end, which doesn’t include the four pages that the cover takes up (front, inside front, inside rear, and rear).
Watch your page counts. Make sure you have enough story to fill the issue without padding. It’s always easier to condense than it is to expand. (Remember, divisible by 4. If you go to an odd number of pages for your book, you’ll have more space you’ll have to fill later.)
And there’s your tip.