Of course!

You need a server to host your image. One is
http://www.photobucket.com. Just click on "Sign up now" and fill the form (I personally never give my real name on these forms). Once you'll have your account, click on the "Browse" button (at least I think it's "Browse", my computer is in French so this button is in French too here

) and select the picture in your computer. Then click on "Submit" to upload the picture on the server. Then you will see a small version of your picture and, just below it, there will be three text boxes with code in them. Copy the last one (the "Img" one) and paste it here, and the drawing is going to show up in your post.

If you have problems, feel free to ask more questions. Another solution could be to send an e-mail with the drawing attached to one of us who could then host it and put the link here.