Printed Image is not as clear as screen image

[debaroo]

I have a Rebel EOS SL2 and I have a picture that I was submitting to an exhibit and the pixels under properties for this image is 3555 x 3983 pixels.  I used GIMP to confirm that the dpi for my 8 x 10 printed picture would be at least 300 dpi and it should be based on the conversion of pixels to dpi (3555/300 = 11.85 & 3983/300 = 13.28).  Basically I should be able to print up to an 11 x 13 picture with this image and still get a 300 dpi quality print.  However, when I received my printed image, it just doesn't look as good as it did on my screen, which I understand is 72 DPI.  I am not sure why my picture does not look as good when printed.  What am I missing?  Could it be related to my background blur or something else I am not considering?  I ordered my print from an online source and had it mailed to me, so I am not processing/printing images myself.  Can anyone provide any insight into what I might be missing. 

[ebiggs1]

"I have downloaded the Canon Digital Photo Professional and if I feel it does not meet my needs..."

I, too, would like to know what DPP4 does not do for you?

[ebiggs1]

" I will look at purchasing Photoshop or Lightroom."

You can not buy PS or LR.  You have to rent them for $10 per month.

[debaroo]

Okay thanks

[debaroo]

I am not sure yet as I have not used DPP yet. I just downloaded it. I think my previous comment might have been confusing. What I was trying to say was that if DPP does not have all the options I might need my next step will be to try Lightroom or PS.

Thanks